Book Series

The Interstellar Slayer series by Scott Baron is a four-book sci-fi fantasy about a vampire assassin in space, published in 2020.

The Intertwined series by Gena Showalter is a YA paranormal romance about a teenager who shares his body with the souls of others.

Intervention by Julian May is a standalone novel that bridges the Pliocene Exile saga and the Galactic Milieu Trilogy, published in 1987.

The Interventions series is a Routledge academic book series on international relations, political theory, and global governance, with over 130 volumes published between 2009 and 2022.

Interviews with Icons is a series featuring extended conversations with notable figures, including Tea with Winnicott and Coffee with Freud by Alison Bechdel.

Complete reading order for the InterWorld trilogy by Neil Gaiman and Michael Reaves, a young adult science fantasy series.

Into Shadow is a 2022 horror anthology featuring seven stories by different authors, including Lev Grossman's contribution alongside other notable writers.

Into The Afroverse by Vered Ehsani is a standalone science fiction novel set in an African-inspired multiverse.

The Into the End series by Bonnie R. Paulson is a three-book series running from 2012 to 2013, starting with Into the End.

The Into the Free series by Julie Cantrell follows Millie Reynolds from Depression-era Mississippi to wartime Colorado in two novels of Southern and inspirational fiction.

The Into the Mist duology by P.C. Cast is a fantasy series about an ancient evil awakening and the heroes who must stop it.

The Into the Unknown series by Caleb Wygal is a two-book sci-fi adventure published in 2018.

The Into the Wild series by Molly Fader features three steamy romances published between 2014 and 2017.

Intrigue Noir is a four-book Harlequin series by Julie Miller, with all books published in 2014, featuring darker, edgier romantic suspense stories in a noir-inflected style distinct from her Kansas City Precinct work.

The Intrigue Under Western Skies series by Elaine Manders in order, a western romance and suspense series starting with Pursued.

The Invaders series by Vaughn Heppner is a 6-book science fiction saga about alien incursions, time-warping technology, and humanity's resistance.

Invaders From Above is a standalone science fiction horror novel by Derek Slaton.

The Invasion series by Jason Cordova follows the Salvage Title universe with three books about an alien incursion.

The Invasion series by J.F. Holmes is a seven-book military science fiction sequence about an alien invasion of Earth, published between 2013 and 2018.

The Invasion America series by Vaughn Heppner is a 5-book military science fiction saga about a foreign power's invasion of the United States.

The Invasion USA Series by J.A. Johnstone is a two-book modern-day thriller about a military invasion along the U.S.-Mexico border, published in 2006.

Invasive Species (2025) by John Wilker is the start of a new science fiction series exploring an alien threat on Earth.

Inventors World is a science fiction series by Christopher Hopper, featuring The Sky Riders published in 2013.

The complete reading order for the Investigation series by Chris Purser, a two-book crime fiction series starting with In Confidence (2016).

The Investigator series by Dave Daren follows a private investigator working outside the courtroom, digging into cases that lawyers and cops have given up on.

The complete reading order for the Invisible series by David Ellis, a thriller duology co-written with James Patterson.

The Invisible Inkling series by Emily Jenkins follows a boy who befriends an invisible bandapat, a strange creature with a love for squash.

The complete reading order for Invisible Kingdom by G. Willow Wilson, a science fiction comic about religion and corporate power in space.

The Invitation To... series by Bronwen Evans is a four-book series running from 2011 to 2020, starting with Invitation to Ruin / Lord of Wicked.

Iona Whishaw's children's book Henry and the Cow Problem (1995), a picture book about a boy and his relationship with a stubborn cow.

The Iowa series by Andrea Boeshaar includes three Christian romance novels set in Iowa, published between 2007 and 2009.

Collections by Irene Sauman, including the historical non-fiction work The Nineteenth Century Lady's Commonplace Book.

The Irin Chronicles reading order by Elizabeth Hunter, a paranormal romance series about scribes descended from angels.

The Iris Ballard series by Jennifer Harlow features two dark crime fiction novels following a female protagonist through dangerous investigations.

Iris Gottlieb's non-fiction books are illustrated guides covering science, nature, gender identity, and biology for curious readers of all ages.

Irish Angel books in order by Jill Marie Landis. Complete reading order for this inspirational historical romance trilogy set in 1870s America.

The Irish Castle Mystery series by Traci Hall in reading order. Cozy mysteries set in Ireland and Scotland.

Irish Century books in order by Morgan Llywelyn. Complete reading order for all books in the Irish Century series with publication dates.

Alice Duncan's 14-book Irish-themed historical romance series published between 2000 and 2003, with entries set in Ireland and among Irish immigrant communities.

The complete reading order for Nora Roberts' Irish Hearts series, spanning from 1981 to 2000, featuring connected stories of Irish families, horses, and romance.

The complete reading order for Nora Roberts' Irish Hearts series, a romance collection spanning two decades and centered on Irish families involved in horse breeding and racing.

The complete Irish Lullaby series by Bianca D'Arc in reading order, a paranormal romance duology set in Ireland.

Irish Matchmaker's is a standalone contemporary romance by Elle Casey set in Ireland, featuring matchmaking and unexpected love.

The Irish Tearoom Mysteries by Virginia Smith are cozy mysteries set in a tearoom in Ireland, featuring amateur sleuthing and Irish culture.

The Irish Western series by C.H. Admirand is a historical western romance collection set in the Old West with Irish heritage themes, starting with The Marshal's Destiny (2001).

The Irish Wolf Shifters series by Flora Ferrari features two paranormal romance novels about wolf shifters set in Ireland.

The Irishmen series by Melanie Moreland features two contemporary romance novels published in 2025, following Irish heroes in passionate love stories.

The Iron & Thorns series by E.B. Wheeler is a Victorian faerie tale fantasy spanning four books published between 2022 and 2024.

The Iron and Lace series by B.B. Hamel blends dark romance with intense emotional stakes across five connected novels.

The Iron Badges series features five romances with heroines in law enforcement and protective roles.

The Iron Druid Chronicles by Kevin Hearne follows Atticus O'Sullivan, a 2,100-year-old Irish druid living in modern Arizona, as he deals with gods, vampires, and supernatural threats from multiple mythologies.

Complete list of all 21 Iron Druid Chronicles books in order by Kevin Hearne. Full reading order from Hounded to Scourged, including novellas and short stories.

The Iron Horse series features three romance novels set across international locations with dual-title formats.

The Iron Ladies series features four revenge-themed romances with heroines taking matters into their own hands.

A 23-volume reading guide to Iron Man's most significant Marvel Comics stories, covering essential collected editions from 1981 through 2024 across multiple creative eras.

Iron Man: Legacy is a Marvel Comics series by Fred Van Lente exploring Tony Stark stories set between major Iron Man events.

Three collected editions of the Iron Man and Thor crossover stories, primarily covering the 2011 God Complex storyline by Dan Abnett and Andy Lanning.

The Iron on Iron series by Gregory Ashe follows five books of LGBTQ+ mystery and romance with themes of conflict, loyalty, and hard choices.

The Iron Orchids series features nine romance novels with diverse heroines navigating love, career, and personal challenges.

The Iron Rogues MC series by Elle Christensen in reading order, a 15-book motorcycle club romance series.

The Iron Seas is a steampunk romance series by Meljean Brook set in an alternate Victorian world where the Mongol Horde rules through steam technology and nanotechnology. The series began in 2010 with The Iron Duke.

Iron Seas: Kraken King is an eight-part serial by Meljean Brook set in the Iron Seas steampunk world. It follows Zenobia Fox and Ariq as they travel through dangerous territory in the Great Jade Sea.

The Iron Skulls MC series by Autumn Summers features four MC romance novels. See all books in reading order.

Iron Tyrant is an eight-book LitRPG fantasy series by Seth Ring, published from 2024 to 2026.

The Iron Vex MC series by E.C. Land is an eighteen-book series running from 2019 to 2023, starting with Enraged.

The Ironhaven Pack Romance series by Piper Fox in order, a seven-book wolf shifter romance starting with The Alpha's Mate.

The Ironside Protection Services series by Juno Rushdan is a romantic suspense series set in Montana featuring private security operators facing deadly threats.

Irregular Scout Team is a three-book military fiction spinoff by J.F. Holmes connected to the Zombie Killer Blues universe, published between 2017 and 2025.

The Irresistible Husband series by Sharon C. Cooper is a three-book contemporary romance trilogy published in 2020, centered on married couples keeping the spark alive.

The Irresistible Russian Tycoons series by Carol Marinelli is a four-book Harlequin Presents series about powerful Russian men and the women who break through their defenses, published between 2015 and 2016.

Irresistibly Mine is a 3-book series by M.A. Comley that blends romantic thriller elements with crime fiction, featuring the character Christa and published in 2016 and 2019.

Irvine Welsh has contributed to fifteen anthologies between 1994 and 2022, with pieces appearing in collections of Scottish and international writing.

Irvine Welsh's non-fiction includes Days Like This (2009), a memoir and essay collection.

Irvine Welsh's short fiction includes Rave (2018), a standalone novella set in the Edinburgh club scene.

Irvine Welsh's short story collections include The Acid House, Ecstasy, If You Liked School You'll Love Work, and Reheated Cabbage.

Irvine Welsh's standalone novels include Marabou Stork Nightmares, Filth, and The Sex Lives of Siamese Twins, all set in or connected to Edinburgh.

Non-fiction works by Irving Stone, including biographies, histories, and edited collections.

Non-fiction books by Irving Stone in publication order, including biographies and historical works.

Short story collections by Irving Stone, including The Irving Stone Reader.

All standalone novels by Irving Stone in publication order, from Lust for Life to Depths of Glory.

Is It Just Me? is Miranda Hart's humorous memoir about the awkwardness of modern life, published alongside a companion volume.

Is This Love? by J.S. Cooper is a standalone contemporary romance novel called Carry My Heart, published in 2018, about two people questioning whether their connection is real love.

Isaac Asimov's I, Robot series by Mickey Zucker Reichert continues Asimov's robot universe in three authorized novels exploring the Three Laws of Robotics.

The Isaac Bell Adventures series by Justin Scott is a 21-book series running from 2002 to 2025, starting with The Chase.

The Isaac Bell Adventures is a historical thriller series set in early twentieth-century America, following Van Dorn Agency detective Isaac Bell across fifteen novels co-written by Clive Cussler and Jack Du Brul.

The Isaac Biddlecomb series by James L. Nelson follows an American naval officer through the Revolutionary War across six novels.

Short fiction by Isabel Ashdown, including the novella A Quiet Winter.

Standalone literary fiction and domestic suspense novels by Isabel Ashdown exploring family secrets, identity, and the weight of the past.

Isabel Canas's short fiction spans gothic horror and dark fantasy, with stories published in various magazines and anthologies since 2019.

Isabel Canas's standalone novels are gothic horror stories set in historical Mexico, including The Hacienda and Vampires of El Norte.

Isabel Cooper's short fiction includes one work published between 2017 and 2017.

Complete list of Isabel Kaplan's standalone novels in reading order. Find her books including Hancock Park and NSFW with publication dates and links.

The Isabella & Ferdinand trilogy by Victoria Holt follows the Spanish monarchs whose marriage united Spain and launched the Age of Exploration.

The Isabella and Ferdinand trilogy by Jean Plaidy (Eleanor Burford Hibbert) covers the lives of the Spanish monarchs who unified Spain, funded Columbus, and established the Spanish Inquisition.

Isabella Starling's anthology contributions include the dark romance collection Tales of Darkness and Sin.

Isabella Starling's standalone novels offer self-contained dark romance stories featuring possessive heroes, taboo themes, and intense power dynamics.

Isabelle Holland's short stories and novellas are primarily children's fiction, featuring standalone tales published from 1974 to 1999.

Isabelle Holland's standalone novels span young adult fiction, gothic romance, and literary fiction, published from 1967 to 1994. The collection of 36 novels includes her best-known work, The Man Without a Face.

The Isaiah Coleridge series by Laird Barron is a noir crime saga following a half-Maori former mob enforcer turned private investigator in upstate New York, starting with Blood Standard.

Isaiah Reinhardt: Mountain Man is a standalone Western novel by Leroy A. Peters following a mountain man's journey through the American wilderness in 2021.

The iSEAL series by Jude Hardin features seven action thrillers following military-trained operatives through increasingly dangerous missions.

Isekai Emperor by Michael Dalton is a portal fantasy series about a character transported to another world who rises to become emperor.

The Ishmael series by Daniel Quinn is a trilogy of philosophical novels that examine civilization, sustainability, and humanity's relationship with the natural world, beginning with the award-winning Ishmael (1992).

The Isinda series by Rhett C. Bruno is a fantasy trilogy published between 2010 and 2013, representing his earliest published fiction.

Complete reading order for M.C.A. Hogarth's Iskadi Kherishdarem series, an expanded look at the Ai-Naidar alien civilization from the Kherishdar books, with six entries published from 2008 to 2020.

The Iskari series by Kristen Ciccarelli is a young adult fantasy trilogy about dragon hunters and dangerous stories, published between 2017 and 2019.

Anthologies featuring Isla Olsen, including The Matchmakers multi-author collection.

Short stories and novellas by Isla Olsen, including The Ghosts of Crushes Past.

Standalone novels by Isla Olsen, including the MM romantic comedy P.S. I Loathe You.

The Islam Quintet by Tariq Ali is a series of five historical novels tracing Muslim civilizations from medieval Moorish Spain through the Ottoman Empire to modern Pakistan.

The complete Island series in order by Victoria Hislop, set on and around the former Greek leper colony of Spinalonga. The series includes four books published between 2005 and 2020.

The Island by Amy Cross is a five-book survival horror series set on a remote and dangerous island.

The Island Adventures series by G.R. Jordan — a standalone novel.

Complete reading order for the Island Bites series by N.G. Peltier, a contemporary romance series set in Trinidad and the Caribbean.

Complete reading order of all six books in the Island Cottage women's fiction series by Rebecca Alexander, starting with Secrets of the Cottage by the Sea.

The Island Duet series by L.B. Dunbar in reading order, a two-book romance series set on an island, published in 2017.

The Island Mystery series by Anna Johannsen follows DI Lena Lorenzen as she solves crimes on the North Frisian islands of Germany.

Island of Rubia by Rachel Blaufeld is a one-book series featuring The House of Malachite, a 2025 romance set on a tropical island.

Islands is a three-book historical fiction series by Murray Pura set across remote and dramatic island landscapes.

The Islands series by Patrick E. Craig and Murray Pura is a historical fiction trilogy blending adventure, mythology, and faith across ancient and timeless settings.

Islands of Intrigue: San Juans by Lynnette Bonner is a Christian romantic suspense series set among the San Juan Islands of Washington state.

The Isle of Man Cozy Mysteries by Diana Xarissa Dunn follow Aunt Bessie through 26 alphabetically titled cozy mysteries set on the Isle of Man, published from 2014 to 2020.

The Isle of Man Ghostly Cozy series by Diana Xarissa Dunn adds paranormal elements to the Isle of Man setting across 26 alphabetically titled mysteries published from 2016 to 2023.

The Isle of Man Romance series by Diana Xarissa Dunn features ten romance novels set on the Isle of Man, interweaving with her Aunt Bessie mystery series.

Isle of the Forgotten is a paranormal romance series by Tiffany Roberts set on a mysterious island with four books published in 2016-2017.

The Isle of Wesberrey series by Steve Higgs features Reverend Jessamy Ward solving mysteries on a fictional British island.

The Isles/Templars series is a six-book Scottish medieval romance series by Amanda Scott that blends Highland politics with the legacy of the Knights Templar, published between 2004 and 2007.

The Islevale Cycle by David B. Coe is a time-travel fantasy trilogy where a young walker navigates dangerous temporal powers to protect a vulnerable sovereign.

IST-1 is a five-book military science fiction series by J.F. Holmes following Irregular Scout Team One in a post-apocalyptic setting, published between 2022 and 2025.

The It Girl series by Cecily Von Ziegesar is a thirteen-book series running from 2005 to 2011, starting with The It Girl.

The It Girl is a four-book YA comedy series by Katy Birchall following Anna Huntley as she deals with the chaos of her dad becoming a celebrity, published from 2015 to 2018.

The It Girl is a four-book YA series by Katy Birchall about a teenager whose life turns upside down when her father becomes a celebrity, published from 2015 to 2018.

The It Happened In series is a collection of regional history books published by Globe Pequot, with each volume covering notable events from a different U.S. state or region.

The It Happened One Night series by Vicki Lewis Thompson features holiday-themed romances spanning from 1997 to 2011.

Complete reading order for the It Takes a Thief series by Rob J. Hayes, a fantasy duology about a pair of thieves.

Alice Duncan's seven-book historical romance series published in 1997-1998, featuring dog-themed stories set in the late Victorian era.

It's A Kind of Maragic is a three-part illustrated children's series by Ig Oliver, expanding the world of the Butterfly Bee Lady books into a broader adventure following Bee and her companions through a series of fantastical encounters.

The It's All Relative Ghost Mystery series by Sara Bourgeois features ghostly family members causing trouble. The three books were all published in 2022.

It's Complicated is a five-book romance series by Elsie James exploring modern situationship dynamics.

It's Complicated is a six-book contemporary romance series by Maggie Cole about messy relationships, family ties, and the difficulty of moving forward when the past won't stay buried.

It's Just Sex is a standalone romance series by Sable Hunter featuring the 2013 novel Green With Envy.

The It's Raining Men series features 12 contemporary romance novels, all published in 2021.

It's Raining Men is a twelve-book contemporary romance series by Evie Mitchell, all published in 2021.

The Italian Billionaires series by Jennifer Blake features five contemporary romances set among wealthy Italian men and the women who capture their attention.

The Italian Escape series by Kerry Fisher features women finding fresh starts and unexpected romance in a Rome apartment.

Italian Husbands is a 27-book Harlequin Presents collection featuring Italian and Sicilian heroes in marriage-focused romances, published between 2002 and 2009.

The Italian Husbands series collects 27 Harlequin Presents romances featuring Italian and Sicilian heroes, published between 2002 and 2009.

The Italian Lovers series by Avery North is her longest series with 17 contemporary romances set in Italy, published between 2020 and 2022.

Italian Stallions is a contemporary romance duology by Magda Alexander featuring Italian heroes and holiday settings.

Itchy Coo is an eight-book series of children's picture books by James Robertson published in Scots, from 2006 to 2013, designed to introduce young readers to the Scots language.

Itty Bitty Kitty Magic Mysteries is a six-book paranormal cozy mystery series by Corrine Winters featuring small cats and magical crimes, published in 2021.

The Ivanov Bratva series by Lisa Lovell is an eight-book dark mafia romance set within a Russian crime family, published in 2022.

Ivar, Timewalker is a Valiant Comics series by Fred Van Lente about an immortal time traveler and his reluctant companion.

Ivie McKie is a paranormal romance duology by Erica Lucke Dean about a woman who accidentally becomes a sorceress and must navigate her chaotic new magical life.

The IVP New Testament Commentary series by Robert Harvey, 20 volumes of biblical commentary on New Testament books.

The Ivy Beasley Mystery series by Ann Purser features elderly sleuths in a retirement community solving crimes in their English village.

The Ivy Corva series by Rebecca Cantrell begins with The Girl Who Would Live Forever, a story exploring the consequences of immortality.

Ivy Fox's standalone novels are self-contained dark romances that showcase her range outside her series work.

Ivy James's short stories and novellas collect five shorter works of contemporary romance published under Kay Lyons Stockham's Ivy James pen name, featuring the same emotional storytelling as her sweet titles but with more heat and mild language.

The Ivy Meadows Mystery series by Cindy Brown follows an aspiring actress who solves murders in the world of community theater, with each book punning on a famous play.

Ivy Nelson's anthology contributions include one collection published between 2023 and 2023.

Ivy Pochoda's short fiction, including the novella Eerie Basin published in 2025.

All six of Ivy Pochoda's standalone novels listed in publication order, from The Art of Disappearing (2009) to Ecstasy (2025).

The Ixan Legacy series by Scott Bartlett continues the story from The Ixan Prophecies, following humanity's ongoing war against the Ixan threat across four books.

The Ixan Prophecies is a military science fiction trilogy by Scott Bartlett about humanity's first encounter with a powerful alien civilization.

The Izzy McNeil series by Laura Caldwell features six legal thrillers about a Chicago attorney, published between 2009 and 2012.

Reading order for the Izzy Palmer Mystery series by Benedict Brown. Contemporary cozy mysteries following a woman with a talent for finding corpses.

The J.B. Collins series by Joel C. Rosenberg in reading order. A three-book thriller about a journalist covering Middle Eastern crises.

J. Kenji Lopez-Alt's edited food writing collections, including The Best American Food Writing 2020.

J. Kenji Lopez-Alt's cookbooks in order, including the bestselling The Food Lab (2015) and The Wok (2022).

J. Lynn Bailey's anthology appearance in Fifty First Times (2014) represents her earliest published work, a multi-author collection of romance stories.

J. Lynn Bailey's standalone novels include Standing Sideways and The Light We See, two character-driven stories of personal growth and emotional discovery.

J.R. Rain has contributed to five multi-author anthologies spanning paranormal and fantasy fiction from 2013 to 2021.

J.R. Rain's short stories and novellas include twelve standalone shorter works published between 2016 and 2023.

J.R. Rain's short story collections gather his paranormal and vampire fiction into themed volumes from 2009 to 2020.

J.R. Rain's standalone novels span paranormal fiction, fantasy, and adventure, from Ararat (2006) to Master Nicolo (2024).

M.J. Rose's anthology contributions include collections on topics ranging from crime fiction to pop culture criticism, including FaceOff and Fifty Writers on Fifty Shades of Grey.

J. Rose's anthology work includes a contribution to the holiday dark romance collection Silent Night.

M.J. Rose's non-fiction books focus on publishing advice and author marketing, drawing on her own experience as a self-publishing and digital marketing pioneer.

J. Rose's short fiction includes Drown in You and the holiday novella A Crimson Carol, offering compact dark romance stories.

M.J. Rose's short story collection In Session gathers her shorter fiction into a single volume.

M.J. Rose's standalone novels range from early erotic thrillers like Lip Service to historical fiction including Tiffany Blues and The Last Tiara.

J. Todd Scott's standalone novels are crime thrillers that explore dark corners of American life beyond the Texas border.

The J. W. Wells & Co. series by Tom Holt is an eight-book comic fantasy saga set in a magical corporate firm in London, blending office comedy with supernatural adventures.

J.W. Wells & Co. follows the misadventures of employees at a magical London law firm where filing errors can cause reality to unravel.

J.A. Armstrong Short Stories/Novellas features three shorter works by Nancy Ann Healy writing as J.A. Armstrong, blending romance with fantasy elements.

J.A. Armstrong Short Story Collections features Beginnings, a 2025 collection of short fiction published under the J.A. Armstrong pen name.

Eleven multi-author anthologies featuring short fiction by J.A. Konrath, spanning crime, horror, and thriller genres from 2006 to 2014.

Two non-fiction books by J.A. Konrath about self-publishing and the ebook revolution, including his influential publishing blog in book form.

A picture book by J.A. Konrath featuring The Globs of Use-A-Lot 3, published in 2017.

Four standalone short stories and novellas by J.A. Konrath spanning horror, comedy, and dark fiction, published between 2011 and 2016.

Three short story collections by J.A. Konrath gathering his crime and horror fiction, published between 2009 and 2010.

Four standalone novels by J.A. Konrath spanning horror, comedy, and dark fiction, including the collaborative Draculas.

A short story collection by J.A. Pitts gathering his fantasy and speculative fiction.

Short fiction by J.A. Pitts, including work connected to the Sarah Beauhall universe.

Standalone novels by J.A. Sutherland, including Mad Cow, outside his science fiction series.

J.B. West's non-fiction books, including the classic White House memoir Upstairs at the White House: My Life with the First Ladies (1973).

J.C. Daniels' anthologies include contributions to multi-author paranormal romance collections.

J.C. Daniels' standalone novels are individual works of urban fantasy and paranormal fiction outside her main series.

The J.D. Blunt Thriller series by R.J. Patterson features a tough protagonist in a series of action thrillers that began in 2024 with Into the Deep.