Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Di Marcello’s Secret Son | 2017 | Dani Collins | Buy |
| 2 | Xenakis’s Convenient Bride | 2017 | Dani Collins | Buy |
| 3 | Salazar’s One-Night Heir | 2017 | Dani Collins | Buy |
The Secret Billionaires gathers three 2017 Harlequin romances featuring wealthy men with hidden connections. Di Marcello’s Secret Son, Xenakis’s Convenient Bride, and Salazar’s One-Night Heir each pair a billionaire with a surprise — a secret child, a marriage of convenience, an unexpected heir — that forces a reckoning with both their wealth and their hearts.
The series is built on classic Harlequin Presents tropes. Di Marcello’s Secret Son delivers the surprise child reveal, Xenakis’s Convenient Bride puts two people together for practical reasons before feelings get involved, and Salazar’s One-Night Heir starts with a single encounter that changes everything. Each hero’s surname anchors the title, giving the books an international flavor.
Dani Collins wrote all three in the same year. The books are connected through their thematic premise rather than a shared family, so they can be read in any order. Readers who enjoy billionaire romance with Mediterranean and Latin American settings will find this series worth picking up.