Tod Slaughter goes about the countryside strangling everybody. His evil scheme is to destroy the family who wronged him. He has a secret lab complete with a torture chamber, featured in the films climax. Probably the most maniacal portrayal Tod ever gave.

吉尔伯特侦探正在寻找一条被一帮小偷抢走的项链。起初，这伙人在伦敦的一所房子里，然后他们逃离了警察。对侦探来说要找回珠宝可不容易。