About the Book

Book: Shadowed Secret (Mirror Estate Series Book 5) Author: S.F. Baumgartner Genre: Christian Suspense Thriller Release date: May 13, 2025 In a world of secrets and shadows, a priest, two accountants, and an elite task force must protect what’s hidden or risk it all. Fr. Phil, a former Navy SEAL turned priest, finds his quiet life at Mirror Estate shattered when a priest from the Vatican pays him a visit. Asked to retrieve a secret book before it’s auctioned on the dark web, Fr. Phil must face lethal adversaries and race against time, knowing his life is on the line. Tommy Rivers’s date with Mia Granger turns deadly when they’re attacked upon discovering a colleague murdered at the office. Assuming they have the book, ruthless operatives have Tommy and Mia in their sights. With the exposure of the secret book threatening the lives of countless operatives, Fr. Phil, Tommy, Mia, and an elite FBI task force must prevent a catastrophic intelligence leak before time runs out.

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About the Author

S.F. Baumgartner crafts fast-paced Christian suspense thrillers, weaving tales of complex characters, secretive operatives, and relentless agents. Her gripping storytelling has earned acclaim, with Living Secrets—Book 1 of her Mirror Estate series—named a Top Pick in the thriller category at Killer Nashville, 2024. When she’s not plotting her next twist, she’s binge-watching crime TV shows, like NCIS or playing with her cats. Fans of James Patterson’s style, especially those who appreciate short, punchy chapters, will find much to love in her work.

More from S.F.

Unraveling Secrets: The Journey of Writing This Book Some books come together effortlessly. Others take their time, demanding patience, persistence, and more rewrites than I care to admit. This latest installment falls firmly into the latter category. The story simply didn’t gel the first couple of times I attempted to write it. I knew where it needed to go, but the journey to get there felt off. Characters resisted the paths I initially set for them, subplots unraveled at the seams, and the pacing never quite clicked the way I wanted it to. It took several drafts and a fair amount of frustration before things finally started falling into place. Looking back, I realize that part of the struggle was that this book needed to do more than just continue the story—it had to weave together past threads while setting the stage for what’s to come. That’s a delicate balance, and it wasn’t something I could rush.

Why I Wrote This Book

The simplest answer? It’s the next chapter in the story. After everything that has happened in previous installments, there were lingering questions that needed answers, loose ends that needed to be tied up—or, in some cases, unraveled even further. This story is about Fr. Phil. He’s no longer just the priest of Mirror Estate’s chapel; he’s once again being pulled into the shadows of his past. Old alliances resurface, and new threats emerge. At the same time, Olivia and Simon’s upcoming wedding adds a deeply personal layer to the story. In many ways, this book is about past decisions catching up with the present—whether in matters of faith, espionage, or personal relationships. And then there’s the Ghost. Marge Beaumont remains as enigmatic as ever, and while she’s playing by the rules—for now—it’s clear she’s still ten steps ahead of everyone. The question isn’t just whether she can be trusted, but whether anyone can truly outmaneuver her.

The Challenge of Getting It Right

What made this book particularly challenging was the complexity of the narrative threads. There’s a missing book that may or may not contain dangerous secrets. There’s an auction on the dark web that threatens national security. There’s a decades-old mystery involving hidden treasure. And, of course, there’s the ever-present undercurrent of trust and betrayal—who’s telling the truth, who’s working an angle, and who’s about to make their next move? Balancing these elements while keeping the pacing tight and the stakes high took longer than expected. Some subplots had to be reworked entirely, others had to be trimmed down, and a few surprises emerged that even I didn’t see coming in the early drafts.

What’s Next?

Now that this book is finally complete, I can say with confidence that the struggle was worth it. The twists, the revelations, and the character moments that emerged from this process have made it stronger than I initially imagined. For readers who have been following this series, I hope you enjoy the ride. Expect high stakes, hidden agendas, and a few moments that might just leave you breathless. And as always, thank you for sticking with me on this journey—because the story is far from over.