Browse our collection of book series, each with a complete reading order guide.
The Inconveniently in Love series by Jennifer Griffith is a collection of clean romantic comedies featuring marriage-of-convenience stories. Read all five books in order starting with Legally Wedded.
The Incorruptible Ivy Jackson Mysteries by Rosie A. Point follow a determined amateur sleuth and her dog Boo through a series of murder investigations.
The Incredible Hercules is a Marvel Comics series co-written by Fred Van Lente and Greg Pak, following the Greek demigod Hercules in the modern Marvel Universe.
Incredible Hulk collected editions by Peter David in reading order.
The Incredible Hulk by Peter David Omnibus editions in reading order, collecting his landmark run.
The Incredible Hulk by Peter David Omnibus collects the acclaimed comic book run in oversized editions, with Lee Weeks among the featured artists.
Incredible Hulk Epic Collection trade paperbacks in reading order, reprinting classic Hulk stories.
The Incredible Hulk Visionaries collected editions in reading order, reprinting key Hulk creative runs.
The InCryptid series by Seanan McGuire follows the Price family of cryptozoologists protecting supernatural creatures from a secret organization, spanning 28 novels and short stories.
The InCryptid Short Stories and Novellas by Seanan McGuire expand the Price family world with 29 shorter works exploring different family members and cryptid species.
The Incubation Trilogy is a three-book young adult dystopian series by Laura DiSilverio set in a future America ravaged by disease and environmental collapse.
Incubus Inc. is a three-book urban fantasy series by William D. Arand published between 2019 and 2021.
The Incubus R.A. series by Virgil Knightley is a supernatural harem comedy set in a college-like environment. The series has eleven books published between 2021 and 2023.
The Indecent series by Erika Wilde is a three-book contemporary romance trilogy published in 2023, following a couple through escalating desire and hidden truths
The Indecent Games series by Clarissa Wild is a two-book series running from 2016 to 2017, starting with Wicked Bride Games.
The Independence Islands series by Chautona Havig is a massive thirty-one-book Christian romance series set across several fictional island communities.
Independent Women of Horseshoe Hill is a four-book western romance series by Patricia PacJac Carroll published in 2021.
The Indexing series by Seanan McGuire follows ATI Management Bureau agents who prevent fairy tale narratives from breaking into reality, across two novels published in 2013 and 2016.
The India Black series by Keisha Ervin follows the titular character through eight books of urban fiction drama, exploring love, betrayal, and resilience.
The India Hayes series by Amanda Flower features five cozy mysteries published between 2010 and 2017.
Complete list of all 3 India Kane books in order by C.J. Carver (Caroline Carver). Full reading order from Blood Junction to Dead Heat.
The Indian Hill series by Mark Tufo is a sci-fi horror saga about an alien invasion that begins with a college student's abduction and spirals into a fight for humanity's survival.
The Indian Hill YA Series adapts Mark Tufo's alien invasion storyline for a younger audience with age-appropriate content.
Reading order for the Indigo Bay Christmas Romances, a multi-author holiday romance series featuring Elizabeth Bromke's Sweet Mistletoe.
The reading order for Melissa McClone's Indigo Bay Second Chances series, six sweet romance novels about finding love again in a coastal town.
The Indigo Bay Sweet Romance series by Kay Correll features sixteen sweet romance novels set in a beach community, published between 2017 and 2018.
The complete reading order for Melissa McClone's Indigo Bay Sweet Romance series, sixteen clean romance novels set in a coastal town.
The Indigo Brothers series by Vickie McKeehan follows three brothers in a romantic suspense trilogy about family, danger, and love.
The Indigo Court series by Yasmine Galenorn follows Cicely Waters, a wind witch fighting the Vampiric Fae who threaten her hometown.
The Indigo Island Romance series by Kaira Rouda features four beach romance novels set on a tropical island.
The Indigo Lewis series by C.M. Stunich features Indigo & Iris (2012), an early fiction work.
The Indigo Lounge series by Zara Cox is an erotic romance collection centered around an exclusive nightclub where desire and secrets collide.
The Indigo Springs series by Nan O’Berry is a two-book series running from 2021 to 2022, starting with Prince Charming Wore Spurs.
Indochina in the Year of is a photographic history series by John L. Plaster documenting the Vietnam War era through the Chinese zodiac calendar.
The Inevitable series by Christina C. Jones spans four books from 2013 to 2018, beginning with Serendipity and exploring love stories that feel fated and unavoidable.
Inevitable is a three-book MM romance series by Riley Hart about couples whose connection was always going to happen.
The reading order for Patricia Johns' The Infamous Amish series, following members of a preacher's family as they navigate love and community gossip.
The Infantino Files by John Nardizzi follows Boston private investigator Ray Infantino through cases involving crime, corruption, and wrongful conviction.
The Infected trilogy by Scott Sigler is a body horror series about alien parasites, starting with Infected (2008).
The Infection series by Craig DiLouie is a post-apocalyptic horror trilogy about survivors fighting through a world overrun by a plague that transforms its victims into violent monsters.
The Infernal Artefacts Trilogy by A.A. Albright blends paranormal mystery with darker themes across three connected novels.
Infernal Bargains by Hailey Edwards begins with Thrice Cursed, a standalone paranormal romance published in 2021.
The Infernal Covenant series by Nadine Mutas in reading order. Four paranormal romance novels about bargains with infernal beings.
The Infernal Descent series by Skye MacKinnon is a dark reverse harem romance trilogy set in hell, following a heroine's descent through its layers.
The Infernal Devices Trilogy is a four-book historical fantasy series by Cassandra Clare set in Victorian London, beginning with Clockwork Angel (2010).
The Infernal Devices Manga adapts Cassandra Clare's Victorian-era Shadowhunter trilogy into manga format.
Infernal Three by May Sage begins with Realm of Darkness (2017), a dark fantasy romance.
The Infernal War Saga by Hailey Turner is a fantasy series set in a world of warring empires, dark magic, and political intrigue.
The Inferno Club is an eight-book Regency romance series by Gaelen Foley published between 2009 and 2014, following aristocratic members of a secret society.
The Inferno Motorcycle Club series by Sabrina Paige features three steamy romance novels set in the world of outlaw bikers, all published in 2014.
The Inferno Rising series by Abigail Owen is a four-book dragon shifter romance about kings, mates, and a war for the dragon throne.
The Inferno Universe series by Alessa Thorn. Four paranormal romance novels with underworld themes.
Inferno World series by Measha Stone in order. A seventeen-book dark romance series set in a world of obsession and forbidden desire.
The Inferno! series collects Warhammer 40,000 short fiction anthologies featuring contributions by Ben Galley alongside other Black Library authors.
Complete reading order for the Inferno! anthology volumes featuring Rob J. Hayes, part of the Warhammer fiction line published by Black Library.
The Inferno's Clutch MC series by E.C. Land is a 31-book series running from 2019 to 2024, starting with Chains' Trust.
Infestation is a two-book extreme horror series by Matt Shaw featuring a creature infestation scenario, beginning in 2013 and collected in a combined edition in 2017.
The Infinita series by Christopher Hopper is a science fiction trilogy featuring space adventure and action across three books published between 2021 and 2022.
The Infinite Black series by D.A. Roberts in order, a science fiction series starting with Blood and Honor.
The Infinite City is a sci-fi romance series by Tiffany Roberts set in a vast alien metropolis with seven books published between 2019 and 2022.
The The Infinity Division series by Jus Accardo is a three-book series running from 2016 to 2018, starting with Infinity.
Infinity Ring is an eight-book multi-author middle-grade time travel series published between 2012 and 2014, with contributions from Matthew J. Kirby and other authors.
Influence is an African American fiction series by Carl Weber about a powerful family using their connections and influence to protect their own.
George Alec Effinger wrote six Infocom tie-in novels based on popular text adventure games of the 1980s and early 1990s.
Anthology appearances and editorial work by Inger Ash Wolfe (Michael Redhill), published between 1996 and 2009.
A play by Inger Ash Wolfe (Michael Redhill), published in 2001.
Short fiction by Inger Ash Wolfe, featuring the story Red Hand published in 2012.
Short story collections by Inger Ash Wolfe (Michael Redhill), published between 1990 and 2001.
Standalone literary novels by Michael Redhill, writing as Inger Ash Wolfe, including the Giller Prize-winning Bellevue Square.
The Inglorious Scoundrels series by Sadie Bosque is a four-book series running from 2025 to 2026, starting with Gone with the Rake.
The Ingrid Langley and Patrick Gillard Mystery series by Margaret Duffy follows a novelist and her MI5-trained husband through 23 books of British crime fiction.
Complete reading order for the Inheritance Collection, five novellas by Anthony Marra about secrets, desires, and revelations between loved ones.
Complete list of all Inheritance Cycle books in order by Christopher Paolini. Full reading order for Eragon and the dragon rider series.
Inheritance of Hunger is a reverse harem fantasy romance trilogy by Kathryn Moon featuring royal succession, desire, and power across three books published in 2020.
The Inheritance of Magic series by Benedict Jacka follows Stephen Oakwood as he discovers drucraft magic in modern London. Read the three books in publication order.
The Inherited Hearts series by Holly Rayner features four romances about love that comes with surprising inheritances and family revelations.
The Inheriting Justice series by Dave Daren follows a lawyer who takes over a case they did not choose and must fight for justice against powerful opposition.
The Inhuman series by Kat Falls in reading order, a dystopian thriller about a plague-ravaged America.
Charles Soule's launch of the Inhuman comic series, introducing new characters and expanding the Inhuman corner of the Marvel Universe.
The complete reading order for the Inishbeg Cove series by Izzy Bayliss, women's fiction set in a fictional Irish coastal village.
The Initiate Brother duology by Sean Russell is an epic fantasy inspired by feudal Japanese culture, blending martial arts, court intrigue, and spiritual discipline.
The Ink & Ashes series by Melissa Toppen is a contemporary romance trilogy published in 2025.
The Ink & Chrome series by Lauren Dane is a five-book series running from 2015 to 2023, starting with Opening Up.
The Ink in the Blood duology by Kim Smejkal is a dark young adult fantasy set in a world where sins are tattooed onto skin, published in 2020 and 2021.
Ink Mage Legacy continues the Fire Beneath the Skin world with Warrior Prime, a standalone novel set in the same tattoo-magic universe.
The Ink Mage SideQuest Trilogy is a set of three novellas by Victor Gischler set in the Fire Beneath the Skin universe, exploring side stories and secondary characters.
Ink Warrior by Logan Jacobs is a two-book harem fantasy series about a warrior whose magical powers come from tattoos, published in 2023 and 2024.
The Inked By Love series by Flora Ferrari features nine tattoo-themed romance novels published in 2022-2023, centered on ink artists and the people who fall for them.
All 7 Inn at Dune Island books by Fiona Grace in reading order, following romance and fresh starts at a coastal inn.
The complete reading order for the Inn BoonsBoro Trilogy by Nora Roberts, including Swedish translations, set at a renovated historic inn in Maryland.
The complete reading order for Nora Roberts' Inn BoonsBoro Trilogy, a contemporary romance series set around a restored historic inn in the small town of Boonsboro, Maryland.
All 5 Inn by the Sea romance books by Fiona Grace in reading order, following a woman finding love and a fresh start at a coastal inn.
The Inn on the Lake series by Alison Sherlock features cozy romance set around a lakeside inn. Complete reading order for both books.
INNcredibly Sweet is a cozy mystery series by Summer Prescott set in a bed-and-breakfast where dessert-themed murders keep the innkeeper busy.
The Innkeeper's World series by Peter S. Beagle began with The Innkeeper's Song in 1993 and expanded through related stories and novellas.
The complete reading order for the Innkeepers series by Rochelle Alers, a four-book romance series set in a New Orleans inn.
The Innocence Claimed series by Madison Faye features three steamy romance novellas published in 2017 with taboo themes and age-gap relationships.
Innocent Brides series by Measha Stone in order. A six-book dark romance series about brides forced into arranged marriages.
Innocent Christmas Brides by Lynne Graham is a two-book holiday romance series from 2020, featuring innocent heroines matched with powerful men during the Christmas season.
Innocent Mistress, Virgin Bride is an eleven-book Harlequin Presents collection featuring innocent heroines paired with experienced alpha heroes, published between 2006 and 2008.
All Innocent Monsters books by Stella Rainbow in reading order. Find the complete series list for this MM paranormal monster romance spinoff.
Innocent No More by Andrew Wareham is a six-book historical war series published between 2019 and 2023, following characters who have lost their illusions about conflict.
Innocents at War by Andrew Wareham is an eight-book historical series following characters through the chaos of a major conflict, published between 2016 and 2024.
A three-book urban fiction series by Diamond D. Johnson about intense, all-consuming love that pushes people to their limits.
The complete reading order for the Insanity series by Andre Gonzalez, a horror series exploring psychological terror and identity.
The Insanity series by Cameron Jace is a dark fantasy reimagining of Alice in Wonderland spanning eleven books, where Alice is an asylum patient who may or may not have actually visited a very real and dangerous Wonderland.
Inside a Turner's Mind is a 2023 Regency romance series by Daphne Byrne with three books featuring a wicked duke, a scandalous marquess, and a grumpy earl.
The Inside Out series by Maria V. Snyder is a dystopian duology about a young woman living in a stratified underground society who discovers the truth about her world.
The Insight series by Jamie Magee features seventeen paranormal romance novels published between 2010 and 2017.
The Inspector Alun Ryga series by Pauline Rowson is a Welsh-set crime fiction series following a detective investigating murders along the Pembrokeshire coast.
The Inspector Alvarez series by Roderic Jeffries / Roderic Graeme is a 37-book series running from 1974 to 2014, starting with Mistakenly in Mallorca.
The Inspector Angus Blue series by Allan Martin is a Scottish crime fiction series following a detective across the islands and towns of western Scotland, with seven books published between 2019 and 2025.
The Inspector Anita Sundstrom series by Torquil MacLeod is an eleven-book Nordic crime fiction series set in Malmö, Sweden, published between 2010 and 2025.
The Inspector Appleby series by Michael Innes spans 50 years of witty, literary British detective fiction, following John Appleby from Scotland Yard to retirement.
Michael Innes's Appleby short story collections gather tales of the cultured Scotland Yard detective in condensed mysteries that showcase the author's wit.
Complete reading order for Peter Robinson's Inspector Banks series featuring Yorkshire detective investigating crimes in northern England.
The Inspector Beeslaar series by Karin Brynard follows a traumatized detective in a remote South African farming community at the edge of the Kalahari Desert.
Inspector Bigswell is a one-book series by John Bude, featuring The Cornish Coast Murder from 1935, a Golden Age detective novel set on the rugged Cornwall coastline.
The Inspector Bland mystery novels by Julian Symons in reading order.
The Inspector Bonaparte series by Arthur Upfield follows half-Aboriginal detective Bony as he solves crimes across the Australian outback. The series spans 29 original novels from 1929 to 1966.
The Inspector Brant series by Ken Bruen follows a violent, unpredictable London detective through eight books of dark, fast-paced crime fiction.
The Inspector Carlyle series by James Craig follows a central London police inspector through twenty-two novels of crime, corruption, and city politics from 2011 to 2025.
The Inspector Celcius Daly series by Anthony J. Quinn features five crime novels set in Northern Ireland, published between 2012 and 2017.
The Inspector Charles Field series by Tim Mason follows a real Victorian-era Scotland Yard detective through historical mysteries set in the London of Darwin and Dickens.
The Inspector Charlesworth series by Christianna Brand is a two-book series running from 1941 to 1979, starting with Death in High Heels.
The Inspector Chucky series by Christianna Brand is a two-book series running from 1950 to 1977, starting with Cat and Mouse.
The Inspector Cockrill series by Christianna Brand is a ten-book series running from 1941 to 2002, starting with Heads You Lose.
The Inspector Crambo mystery novels by Julian Symons in reading order.
The Inspector Crewe series by Arthur J. Rees features Scotland Yard detective Inspector Crewe in two classic mystery novels from the 1910s.
The The Inspector de Silva Mysteries series by Harriet Steel is a sixteen-book series running from 2016 to 2026, starting with Trouble in Nuala.
The Inspector Dreyfus series by Alastair Reynolds is a science fiction police procedural set in the Revelation Space universe, following a lawman in an orbital habitat community.
All 7 Inspector Erik Winter novels by Ake Edwardson in reading order, a Scandinavian crime series following a detective in Gothenburg, Sweden.
Inspector Felse series by Ellis Peters in order. All thirteen mystery novels featuring Detective Inspector George Felse, from Fallen Into the Pit to Rainbow's End.
Complete list of all 19 Inspector Gamache books in order by Louise Penny. Full reading order from Still Life to The Grey Wolf.
The complete Inspector George Gently reading order by Alan Hunter, listing all 51 detective novels from Gently Does It (1955) to Gently with Passion (2016) in publication order.
The Inspector Green Mystery series by Barbara Fradkin is a twelve-book series running from 2000 to 2025, starting with Do or Die.
The Inspector Hazelrigg series by Michael Gilbert follows a Scotland Yard detective through six mysteries published between 1947 and 1953, blending classic whodunit plotting with a solicitor's knowledge of British law.
The Inspector Henri Lefort series by Mark Pryor is a historical mystery series set in Nazi-occupied Paris during World War II.
The complete Inspector Henry Tibbett Mystery series by Patricia Moyes in reading order, a 19-book run of British detective novels published from 1959 to 1993.
The Inspector Hugh Collier series by Moray Dalton features a Scotland Yard detective solving crimes during the Golden Age of detective fiction.
The Inspector Ian Rutledge series by Charles Todd follows a shell-shocked World War I veteran turned Scotland Yard detective solving murders in 1920s England.
The Inspector Ikmen series by Barbara Nadel features a veteran Istanbul detective solving crimes against the backdrop of Turkey's cultural and political tensions.
The Inspector Jack Brady series is a five-book British police procedural set in North East England, following a detective through increasingly dark cases.
Inspector Jack Oxby by Thomas Swan is a three-book mystery series following a Scotland Yard art crime detective, published between 1990 and 1999.
The Inspector John Crow series by Roy Lewis follows a police detective solving murders across the English countryside in 10 novels published from 1960 to 1977.
The Inspector John Crow series is a seven-book British mystery series published between 1969 and 1977, following a Scotland Yard detective who investigates murders in rural England and Wales.
The Inspector Lamb series by Stephen Kelly follows a wartime English detective solving murders amid the chaos and secrecy of World War II.
DI Liam McLusky arrives in Bristol carrying a troubled past and finds the city's criminal landscape is more than ready to test him in this four-book police procedural series by Peter Helton.
The Inspector Lucas Rocco series by Adrian Magson features a Parisian detective transplanted to 1960s rural Picardy, solving crimes in a setting often compared to Maigret.
The Inspector Luckraft series by Arthur J. Rees follows the detective through eight mystery novels published between 1916 and 1940.
The Inspector Maigret series by Georges Simenon consists of 75 novels following Commissaire Maigret of the Paris police as he investigates crimes across France, published between 1931 and 1973.
Complete reading order for Georges Simenon's Inspector Maigret series, featuring the pipe-smoking Parisian detective who solves crimes through patience, observation, and psychological insight across 75 novels written over four decades.
Inspector Maigret Short Story Collections gathers shorter fiction featuring Commissaire Maigret, published between 1945 and 1976.
The Inspector Mercer series by Michael Gilbert consists of two police procedural novels from the late 1970s about a detective investigating murders of young women in English settings.
The complete reading order for the Inspector O series by James Church. This six-book spy fiction series follows a North Korean detective through cases set in Pyongyang and beyond, published between 2006 and 2016.
The Inspector Pekkala series by Sam Eastland follows a former investigator for Tsar Nicholas II who becomes Stalin's most trusted detective in Soviet Russia, spanning seven historical thrillers.
The Inspector Pel series by Mark Hebden follows a grumpy French detective solving crimes in Burgundy across 25 novels.
Complete reading order for Ian Rankin's Inspector Rebus series featuring Edinburgh detective known for his maverick methods and troubled personal life.
The Inspector Robert Colbeck series by Edward Marston follows a Victorian detective who solves crimes connected to the early British railway system.
Inspector Colbeck's Casebook is a short story collection by Edward Marston featuring the Railway Detective characters.
Inspector Colbeck's Casebook is a short story collection set in Edward Marston's Railway Detective world.
Inspector Rykel / Amsterdam Quartet is a crime thriller series by Jake Woodhouse following a Dutch homicide detective through four cases in Amsterdam's criminal underworld.
The Inspector Salgado series by Antonio Hill follows a Barcelona detective through two crime novels, The Summer of Dead Toys (2011) and The Good Suicides (2014).
The Inspector Sam Blackstone series by Sally Spencer follows a Scotland Yard detective through fourteen historical mysteries set in Victorian and Edwardian London and beyond.
The Inspector Shan series by Eliot Pattison is a ten-book mystery series set in Tibet, following a disgraced Chinese investigator solving crimes under political oppression.
Inspector Sherwood is a two-book series by John Bude, with both novels published in 1958, the final year of his career, featuring a new detective protagonist in the tradition of his Golden Age mysteries.
The complete reading order for John Lawton's Inspector Troy series, featuring Scotland Yard detective Frederick Troy in historical crime novels spanning WWII to the Cold War.
The Inspector Vignoles Mysteries series by Barbara Fradkin is a nineteen-book series running from 2000 to 2025, starting with Do or Die.
The Inspector West series by John Creasey follows a Scotland Yard detective through forty-seven books of classic British police procedural fiction from 1942 to 1978.
The Insta-Spark Collection is a series of seven contemporary romance novellas by Melanie Moreland, featuring quick-burning love stories published between 2017 and 2023.
The Instant Gratification series by Casey L. Bond features Insta-Hate, a contemporary romance about enemies who can't stay apart.
Instaread Summary editions related to Anita Diamant's work, listed in publication order.
The Instaread Summary series includes condensed summaries of popular novels, including works associated with Anne Tyler's reading recommendations.
The Instaread Summary series offers condensed overviews of popular novels, including summaries of books by and associated with Sue Monk Kidd.
The Institute series by Atlas Rose in order. A nine-book dark romance series set within a powerful criminal organization.
The Institute for Singular Antiquities series by S.A. Sidor follows 19th-century occult investigators hunting dangerous supernatural artifacts.
The complete reading order for the Institute of the Shadow Fae series by C.N. Crawford, a four-book urban fantasy romance set in a dangerous fae academy.
The reading order for Institute of the Storm Fae by C.N. Crawford, a fae fantasy novel set in the Demons of Fire and Night Universe.
Institute of the Storm Fae is a single-book paranormal fantasy by Katerina Martinez introducing a magical academy setting within her supernatural fae world.
Instrument of Omens is a four-book epic fantasy series by Davis Ashura set in the Anchored Worlds universe, published between 2020 and 2023.
The Intention series by M.A. Comley is a 5-book crime fiction series exploring crimes driven by obsession and intent, published between 2013 and 2019.
The Intergalactic Dating Agency series by Annie Nicholas is a sci-fi romance featuring alien-human matchups arranged by a cosmic dating service.
The Intergalactic Dating Agency series by Tasha Black is a massive sci-fi romance universe with over 60 books about human women matched with alien heroes through a galactic matchmaking service.
The Intergalactic Dating Agency: Starlight Alien Vikings series by Skye MacKinnon features alien warriors with Viking traits matched with human women through a galactic matchmaking service.
The Starlight Highlanders Mail Order Brides series by Skye MacKinnon combines Scottish Highlander themes with alien romance in the Intergalactic Dating Agency universe.
The Intergalactic Dating Agency: Starlight Mermen series by Skye MacKinnon features aquatic alien heroes matched with human women in an ocean-themed sci-fi romance.
Complete reading order for the Intergalactic Dating Agency: The Thelli Logs series by A.M. Griffin, a massive alien romance series with over 60 books.
The Intergalactic Exchange Program series by Roxie Ray follows human women paired with alien males through an interplanetary exchange program.
The Intergalactic Guide to Humans series by Skye MacKinnon is a comedic sci-fi romance about aliens learning to understand (and abduct) humans.
Intergalactic Idol by Piper J. Drake features An Idol with Luv, a 2024 science fiction romance inspired by K-pop.
The complete reading order for the Interim Errantry series, companion story collections set in the Young Wizards universe.
The Interim Fates / Daughter of Zeus Trilogy by Kristine Kathryn Rusch (as Kristine Grayson) follows three young women who temporarily take on the role of the Fates.
The Interlocking Fragments series by Michele Notaro is a four-book contemporary LGBTQ+ romance about piecing together broken lives and finding love.
The International Bad Boys series features four novellas about rule-breaking heroes from different countries, published between 2014 and 2015.
International Billionaires is an eight-book Harlequin Presents collection featuring romances with billionaire heroes from Italy, France, Greece, Argentina, and the Middle East.
The International Billionaires series features fifteen Harlequin Presents romances about powerful billionaire heroes from around the world, published between 2009 and 2022.
International Grooms is a six-book romance series from 2009 to 2010, featuring heroes from around the world in Harlequin Romance stories.
International Playboys by Lynne Graham is a nine-book romance series spanning 1988 to 2000, featuring wealthy men from around the world in passionate relationships.
The International School series by Chanel Cleeton follows American students attending an elite London boarding school full of secrets and drama.
The Interrogators is a standalone thriller by C.G. Cooper following a character named Higgins through a tense investigation.