Harold and Arthur Tulk are a washed up musical hall comedy duo. Harold is picked up carrying a notebook of murdered child Doreen Bates. D. S. Swift is convinced of his guilt but when Harold is found dead in his cell he becomes a suspect.
A racist is using Swift's name and rank to gain the confidence of young foreign girls,but then terrorize them. Swift needs to clear his name but has quietly gone missing with a female acquaintance.
The Third Annual Conference of Human Rights International is the backdrop for a scheme by the British Union of Nazis to take out Brissac, the guest of honour.