‘Yes’. A perfectly harmless message. Except when it is written in the blood of an innocent man.

In the shadowy underbelly of London, a grisly murder rocks the city as a young man's severed head is discovered, launching a chilling serial killer mystery that threatens to unravel the fabric of society. This British crime thriller plunges into the neon-lit streets of Soho and the dank sewers of Camden, where cryptic clues point to a deranged killer with ties to the rock music crime scene.

Enter DI Carson, detective attempting to manage Asperger syndrome while rebuilding his life and crumbling marriage after spending two years undercover. Leading a fledgling squad of London detectives, he must harness his unique insights to rally his team against a foe who leaves no trace—except messages scrawled in victims' blood.

As the body count rises in this gripping police procedural, Carson navigates skepticism from colleagues, pressure from superiors, and relentless media scrutiny. Every lead draws the London police deeper into a web of deception, where one wrong move could cost more innocent lives.

In a city where justice hangs by a thread, can one determined detective stop a madman before London drowns in blood?

If you devour heart-pounding tales of redemption and pursuit like those from Alex Smith, K.T. Galloway, and JD Kirk, this rock music crime story will grip you from first page to last.

Will DI Carson crack the code of this serial killer mystery, or will the shadows of London claim him too?