A Detective Colton Baker Thriller Books in Order

From E.M. Kelly — award-winning author of Murder By Symbols — comes Pulse Zero, the next explosive installment in the Detective Colton Baker series. This high-octane thriller blends cutting-edge science with relentless suspense.

When a mysterious device deploys inside the Stoughton medical facility, every patient dies instantly, except one. The lone survivor becomes the only living witness to a massacre carried out with chilling precision. The killer vanishes without a trace, leaving behind a trail of questions and a sinister new form of weaponized science.

Enter Detective Colton Baker, a sharp, intuitive investigator with a knack for seeing what others overlook. Alongside him is FBI Special Agent Catalina Diaz, a relentless, hard-driven agent whose determination borders on obsession. Together they uncover a terrifying truth — the medical facility was only a test run.

The real target? A Boston-area stadium packed with thousands of spectators, but which one?

As the clock ticks down, Baker and Diaz must navigate encrypted clues, political red tape, and a killer who always seems one step ahead. With the nation watching and the stakes higher than ever, the duo races to stop a catastrophe that could redefine terrorism and rewrite the rules of life and death.

Pulse Zero is a gripping, genre-defining thriller that will leave you breathless and questioning how fragile life truly is.