It was an ordinary Sunday evening in February, 1939, in London's brightly lit West End. Legendary detective, Robert Fabian, known to all as Fabian of the Yard, was enjoying a quiet duty at Vine Street Police Station. Or so he thought. When a musician stumbled into the station, screaming bloody murder, Fabian became entangled in a shadow-play of sleaze, vice and violence. A beautiful singer known as The Black Butterfly had been found brutally murdered in her flat, lying in a pool of her own blood, her killer still on the loose. The cunning inspector had nothing to go on except for a shred of black foil and the vague mention of a man in a nightclub offering the victim drinks. Fabian knew he had to move fast. Or else, risk the knife man striking again... Learn more about your ad choices. Visit podcastchoices.com/adchoices