Unravelled Knots contains thirteen short stories about Bill Owen, aka The Old Man in the Corner, Orzy's armchair detective who solves crimes for his own entertainment.
His listener and protégé is the attractive young journalist Polly Burton. Polly brings him details of obscure crimes baffling the police, which he helps her to solve. She is fascinated by the unlikely unravelings she hears, but despite her sarcasm and pride in her own investigative talents she remains the learner, impressed in spite of herself.
This is the last of three books of short stories featuring the detective and follows on from those in The Case of Miss Elliott and The Old Man in the Corner.