I stumbled across this old Ace Double novel and was immediately hooked by its premise. It’s a quick read, but it packs a real punch.

The Story

Ken Carter works for the Special Services, a sort of interstellar police force. He’s sent to a remote space station to investigate the death of a man named John Doane. But Doane wasn’t just murdered. His mind was completely erased—every memory, every habit, every trace of his personality is gone. His body is alive, but the person inside is dead. Carter, who has mild telepathic abilities, has to navigate the station’s secretive crew and figure out who could possibly wield such a terrifying power, and why they’d use it. The clock is ticking, and the killer might still be on board.

Why You Should Read It

What I loved most was the central mystery. It’s not about finding a weapon; it’s about understanding a form of violence that feels uniquely cold and sci-fi. De Vet builds a real sense of paranoia on that cramped station. Carter is a solid, no-nonsense protagonist for the era—he uses his wits and his limited psychic ‘edge’ without becoming an all-powerful hero. The story moves fast, and the concept of identity being the ‘vital ingredient’ of a human life gives it a weight that sticks with you. It’s a classic puzzle-box plot dressed up in ray guns and rocket ships.

Final Verdict

This is perfect for fans of classic, idea-driven science fiction from the Asimov or early Philip K. Dick era. If you enjoy mystery plots where the ‘howdunit’ is a brilliant piece of speculative technology or biology, you’ll get a kick out of this. It’s also a great pick for anyone curious about the roots of modern sci-fi—you can see the DNA of later stories about identity and consciousness here. Just don’t expect a sprawling epic; it’s a tightly focused, satisfying shot of vintage sci-fi intrigue.