17 July 2025

By the time you reach Blood Brothers, the fourth instalment in Jack Kerley’s Carson Ryder series, you’ve come to expect twisted crimes, complex characters, and psychological tension that hums beneath every chapter. But this book takes it all to the next level, shifting the focus from external monsters to something far more personal—and far more dangerous: family.

The premise alone is electrifying. Detective Carson Ryder has spent his career catching killers, all while hiding the fact that his brother, Jeremy, is one of them—a cunning, manipulative psychopath locked away in a high-security institution. But when Jeremy escapes and a trail of brutal, signature-style murders surfaces in New York, Carson is reluctantly dragged into a manhunt that turns out to be anything but straightforward.

This time, Ryder isn’t just solving a case—he’s part of it. And that emotional weight adds a gripping, almost unbearable tension to every scene. The lines blur between loyalty and justice, and Kerley plays with the idea of how deeply tied we are to our past, even when we try to run from it.

What stood out most for me was the uneasy cat-and-mouse dynamic between Ryder and Jeremy. Jeremy is both terrifying and oddly charismatic—Kerley has always been great at writing psychopaths with a touch of humanity, and here, he’s at his best. Their interactions are layered with history, resentment, and a bizarre kind of brotherly connection that makes you question who’s really manipulating whom.

The setting shift to New York adds freshness and a faster pace, and the NYPD’s suspicions surrounding Carson inject real danger into the plot. You constantly feel the walls closing in, not just from Jeremy, but from the very people Carson is supposed to trust.

Highlights:

• Jeremy is a chillingly brilliant antagonist, impossible to ignore.
• The plot is tight, fast-moving, and filled with deception.
• The emotional undercurrent—the idea that blood ties can both define and destroy—is powerfully explored.
• Kerley’s writing remains sharp, engaging, and unafraid to take dark turns.

Blood Brothers is a tense, unsettling thriller that turns the spotlight inward, exploring how deeply personal the battle between good and evil can be. It’s not just another serial killer story—it’s about the monsters we’re born with, and the lengths we’ll go to contain or confront them. This is a standout in the series, and one that lingers long after the final page.