S.F. Baumgartner’s Lethal Design follows Commander Frank Travers, whose wife Linda was murdered in her Orlando office a year earlier after writing a cryptic message in her own blood. When a federal profiler links part of that message to a series of suspicious deaths, Frank quietly asks Detective Kylie “KC” Cassidy to reopen the trail he cannot investigate himself. At the same time, KC is called to the apparent overdose of attorney T. J. Simms, while Frank’s regional task force, Orlando Prime, begins examining professionals who died from opioids despite having no history of drug use. As the cases begin crossing into one another, both investigations point toward someone who understands exactly how authorities decide what happened. Frank must find the person who killed Linda before another carefully arranged death is accepted as the truth.

S.F. Baumgartner’s Lethal Design is first-rate crime fiction, written with the sharp instinct of a novelist who knows that a gesture can reveal character. The best part is how KC studies the immaculate neatness of T. J. Simms’s office where an upright bottle cap seems deliberately placed. In that instant, KC becomes fully knowable: this is a detective who reads a room with the same intensity another investigator brings to a witness. Nicholas Hale receives equally exacting treatment. Before checking his email, he straightens his wife’s sandals with the toe of his sock, giving one tiny movement that defines his need for order. Such details have the sinister weight of clues, making personality itself feel like evidence waiting to be decoded. Baumgartner writes with a cryptic intelligence that turns every gesture into a signal. Highly recommended for readers who love forensic crime thrillers.

It’s been a year since Frank Travers lost his wife unexpectedly, and he’s still mourning. Another suicide in the building muddied the case, and the investigation stalled after the detective on it was dismissed and the new one couldn’t find any more leads. But it starts to crack open when professionals with no criminal or addiction history start dying much like his wife’s office mate. A task force digs through the networks of power, old cases, and hidden networks in Orlando, Florida, and soon it’s apparent that Frank’s wife wasn’t a random killing, but a carefully calculated part of a plan that has been unfolding for years, perhaps decades. If you enjoy solid mysteries and police procedurals, then Lethal Design by S. F. Baumgartner is for you.

I couldn’t put Lethal Design down. This book pulled me in and kept me turning the pages long past my lunch hour and bedtime. It’s a perfect mystery novel that weaves complex cases into a single, unified tale that’s calculated, chilling, and smart. Even the antagonists in the story are carefully hidden to surprise you in ways that you’ll never see coming. S.F. Baumgartner is starting what promises to be a magnificent and compelling series around a task force that is smart, capable, and innovative. The plot is solid and believable, and I was really drawn into the story, wondering what would happen next. If you enjoy shows like Countdown, then this is a perfect book for you. Highly recommended! I look forward to reading more in this series.