20 books in series
Secret Heirs of Billionaires
Secret Heirs of Billionaires is a 19-book series with 20 primary works first released in 2015 with contributions by Maya Blake, Amanda Cinelli, Kate Hewitt, Maggie Cox, Sara Craven, Andie Brock, Susan Stephens, Jennie Lucas, Julia James, Carol Marinelli, Jennifer Hayward, Sharon Kendrick, Clare Connelly, Dani Collins, Caitlin Crews, and Louise Fuller.
| #2 |  Brunetti's Secret Son (Secret Heirs of Billionaires) / Christmas at the Chatsfield
| 3 | 1 read | ||
| #3 |  The Secret to Marrying Marchesi
| 3 | 1 read | ||
| #4 |  Demetriou Demands His Child
| 0 | 0 reads | ||
| #6 |  The Sheikh's Secret Son
| 2 | 1 read | ||
| #7 |  The Innocent's Shameful Secret
| 0 | 0 reads | ||
| #8 |  The Greek's Pleasurable Revenge
| 0 | 0 reads | ||
| #9 |  The Secret Kept from the Greek
| 0 | 0 reads | ||
| #10 |  Carrying the Spaniard's Child
| 5 | 1 read | ||
| #12 |  The Greek's Secret Son
| 4 | 1 read | ||
| #13 |  Claiming His Hidden Heir
| 4 | 1 read | ||
| #18 |  The Baby the Billionaire Demands
| 0 | 0 reads | ||
| #19 |  Married for His One-Night Heir
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| #20 |  The Secret Kept from the Italian
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| #22 |  The Sheikh's Secret Baby
| 0 | 0 reads | ||
| #24 |  Claimed for the Sheikh's Shock Son
| 0 | 0 reads | ||
| #25 |  Shock Heir for the King
| 3 | 1 read | ||
| #27 |  The Maid's Spanish Secret
| 0 | 0 reads | ||
| #30 |  Unwrapping the Innocent's Secret
| 0 | 1 read | ||
| #31 |  Proof of Their One-Night Passion Proof of Their One-Night Passion
| 0 | 1 read | ||
| #32 |  The Italian's Unexpected Baby
| 0 | 0 reads |