Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The Agent’s Secret Baby | 2009 | Marie Ferrarella | Buy |
| 2 | The Cowboy’s Secret Twins | 2009 | Marie Ferrarella | Buy |
| 3 | The Soldier’s Secret Daughter | 2009 | Marie Ferrarella | Buy |
| 4 | Cowboy’s Triplet Trouble | 2011 | Marie Ferrarella | Buy |
| 5 | The Spy’s Secret Family | 2011 | Marie Ferrarella | Buy |
| 6 | Operation Baby Rescue | 2011 | Marie Ferrarella | Buy |
| 7 | The Texas Soldier’s Son | 2018 | Marie Ferrarella | Buy |
| 8 | The Bounty Hunter’s Baby Surprise | 2018 | Marie Ferrarella | Buy |
| 9 | Cavanaugh’s Secret Delivery | 2018 | Marie Ferrarella | Buy |
Top Secret Deliveries ran for nine books between 2009 and 2018 under the Harlequin Romantic Suspense umbrella. The series combines two reliable romance hooks: secret babies and dangerous professions. The Agent’s Secret Baby opens the run, and from there the books feature cowboys with secret twins, soldiers with hidden daughters, and spies whose family lives are classified information. The titles make the formula clear, and the books deliver on the promise of both thrills and tenderness.
The series spans nearly a decade of publication, giving it a broader range than most Harlequin continuities. Earlier entries from 2009 and 2011 focus on military and intelligence characters, while the 2018 additions bring in a Texas soldier, a bounty hunter, and a Cavanaugh family member. Marie Ferrarella and the other contributing authors keep the pacing tight, with the secret-baby reveal driving the emotional arc while external threats provide the suspense. Readers who enjoy both the protective-parent trope and action-oriented romance will find plenty to like across the full nine books.