When headless male corpses are found floating in the river the common link is scarred hands,which points to them having taken part in illegal bare-knuckle boxing. Strapping Constable Jago,the force's amateur boxing champion, poses as a boxer in search of a prize fight with Cribb as his manager. This leads to the alluring Mrs. Vibart who has a stable of fighters but when she is murdered Jago is a prime suspect. Cribb has to clear his name before he takes too many thrashings in the ring.
—don @ minifie-1