On, Off

Ever wondered what happens when the brilliant minds dedicated to saving lives become the victims of a twisted killer? In a prestigious neuro-research center, a series of gruesome murders begins, each more bizarre than the last, and the killer is leaving behind no clues—just a horrifying signature. You'll join Captain Carmine Delmonico in 1960s Connecticut as he navigates a world of academic rivalry and scientific secrets to unmask the predator hiding in plain sight. Discover how Delmonico's old-school detective work clashes with cutting-edge science to expose the dark motives behind the slayings before the entire research facility becomes a morgue.

A neurophysiologist by training, Colleen McCullough taught at Yale Medical School for ten years before becoming the internationally bestselling author of The Thorn Birds. Her extensive medical background and scientific expertise provided the foundation for the intricate forensic details and chilling authenticity of the Carmine Delmonico series. McCullough's unique ability to blend scientific rigor with compelling storytelling cemented her status as a master of multiple genres, from historical fiction to gripping crime thrillers.