The Calder Files: Silence Protocol: A Detective Calder Crime Thriller

by Timothy L. Drobnick Sr.

323 pages, Kindle Edition

Published July 5, 2026

About the author

Timothy L. Drobnick Sr. writes thrillers where ordinary people are pulled into extraordinary danger and where the truth is never as safe as it first appears.

He is the author of multiple series, including Rescued by Ghosts, the seven-book supernatural true-story thriller series that has earned hundreds of reader ratings; the Timothy Tibb Epic Fantasy Thriller series, a fast-paced blend of fantasy, conspiracy, ancient secrets, and supernatural physics; and The Calder Files, a Boston detective thriller series about crimes hidden inside procedure, official records, and institutional power.

Timothy’s stories often combine high-stakes suspense, moral pressure, hidden systems, and characters forced to question the version of reality they have been handed. Whether he is writing epic fantasy, supernatural suspense, or police procedural conspiracy thrillers, his work explores the same core question: what happens when ordinary people discover the truth is bigger, darker, and more dangerous than anyone expected?

Timothy’s storytelling journey began long before he published his first book. As a child, he was often accused of “not paying attention” in school, when in truth his mind was busy building stories. In 1995, after becoming a single parent of three children overnight, he turned that imagination into a way to support his family—writing short stories, building an email readership, and creating products from home while raising his children.

Years later, he transformed the strange and extraordinary events of his own life into Rescued by Ghosts. Since then, he has continued building fictional worlds filled with danger, mystery, faith, doubt, hidden forces, and characters fighting to survive the truth.

When he is not writing, Timothy enjoys researching unusual history, exploring the psychology of belief and power, and building story worlds where every answer leads to a deeper question.

Reviews

[Pranav Bhatnagar · Rating 5 out of 5]

The Calder Files: Silence Protocol pulled me in much faster than I expected. From the opening pages, there is a feeling that something about the case is wrong, and I really enjoyed trying to work out what Rowan Calder and Jonas Hale were seeing before they had all the answers. What I liked most was Rowan herself. She is observant, stubborn, determined, and clearly carries a lot with her. She doesn't simply accept the easiest explanation, and I found myself respecting that part of her even when I wasn't sure whether her instincts would lead her in the right direction. Jonas was a great partner for her. I really liked the contrast between them. Rowan tends to push forward, while Jonas often brings a calmer perspective. Their partnership became one of my favorite parts of the book because their conversations felt natural and they genuinely seemed to complement each other. The investigation was what kept me turning the pages. Small details repeatedly made me question what I thought I understood. A phrase, a behavior, a document, or something that seemed almost insignificant could suddenly feel important. I enjoyed that feeling of constantly having to reassess the situation. I also liked that the story doesn't make the danger feel simple. There is a growing sense that the problem reaches beyond one person or one incident, and that made the investigation feel much bigger as it progressed. The atmosphere worked really well for me too. The rain, cold streets, quiet rooms, police station scenes, surveillance, and late-night conversations gave the story a tense, almost claustrophobic feeling. I could picture the scenes easily while reading. What surprised me was how much I became invested in Rowan outside the investigation as well. Her relationship with Peter and the pieces of her personal history gave me another reason to care about what she was going through. She isn't just a detective solving a case. She is someone trying to keep herself together while dealing with what the job has already taken from her. The book also made me think about trust in a different way. Who do you believe when someone sounds helpful? When does protection become control? And how easily can people be influenced when they are frightened or vulnerable? Those ideas gave the mystery more weight for me. There are quite a few moving parts, and the story asks the reader to pay attention. I actually enjoyed that. I liked having details to remember and patterns to notice rather than being handed every answer immediately. By the time I finished, I felt like I had been through the investigation alongside Rowan and Jonas rather than simply watching them solve it from a distance.

Overall, this was a tense detective thriller with a strong central partnership, an atmosphere that kept me uneasy, and a mystery that gave me plenty to think about.

I genuinely enjoyed the experience and would happily spend more time with these characters.

[Diedra Pigg · Rating 4 out of 5]

Throughout the whole book I suspected the person who had a hand in driving people nuts to unalive themselves to be who essentially was the suspect. Although my suspicions were right don’t mean this book didn’t keep you from wanting to find out what happened next. Now on to the second book of this series to find out if they can find the suspected suspect that I suspected from the beginning can be caught and detained.

[Tamara · Rating 3 out of 5]

At first this book was hard to understand the plot but as you kept reading it was a good read.

[Sandra Benford · Rating 1 out of 5]

DNF

Sorry, I had to leave Rowen and Hale at the Auto Mechanic hide out...I tried to leave quietly and with dignity, with everything still "contained" . I did leave w/o a care, about any of it.

[Erth · Rating 3 out of 5]

Long and rather boring. Automated narration was a plus