In 1947, with rationing still biting and the black market thriving, university don C.S. 'Jack' Lewis finds himself pulled into a mystery straight from one of his friend Dorothy Sayers' novels. Susan Temple, his brightest student, has hidden herself away at Rake Hall - a hostel for unmarried, outcast mothers - and hasn't been heard from since. With no experience beyond catching the occasional student plagiarist, Lewis is hardly a detective. But when Susan's absence continues to haunt him, he teams up with her concerned friend Lucy and together they delve into the disturbing rumours of a nasty racket at Rake Hall. Can Lewis's nose for the truth separate fact from fiction?