Tall, commanding, and razor-sharp, DCI Isaac Cook rules London’s homicide division with quiet authority. The son of Jamaican immigrants, he’s climbed the ranks through sheer brilliance and uncompromising integrity.

At Challis Street Police Station, Cook demands excellence—from himself first, his team second. His urbane exterior and educated manner mask a relentless hunter of killers with London’s highest murder solve rate.

Cook loathes the politically-driven police bureaucracy almost as much as the criminals he pursues. When pressure mounts to cut corners, he doubles down instead—fighting for victims and true justice while navigating the treacherous waters of modern policing with unwavering moral clarity.