A serial killer known as the Four Monkey Killer is on the loose, and the FBI is desperate to catch him. Detective Sam Kennedy is tasked with hunting down a killer who leaves behind a trail of gruesome murders, each one mirroring the infamous nursery rhyme. As Kennedy delves deeper into the case, he uncovers a disturbing connection to his own past, forcing him to confront his personal demons while racing against time to stop the killer before he strikes again. The narrative unfolds through a dual timeline, alternating between Kennedy's present-day investigation and the killer's chilling backstory.

The premise of a killer inspired by the 'hear no evil, see no evil, speak no evil' monkeys sets up a dark and suspenseful thriller. The dual timeline structure suggests a narrative that builds tension by revealing the killer's past alongside the present-day investigation. The focus on a detective with a troubled past is a common trope in the genre, promising a character-driven element to the suspense. The book appears designed to engage readers with its intricate plot and psychological depth.