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.
Raoul Brissac is the guest of honour of the Third Annual Conference of Human Rights International. Rose arrives to arrest Brissac for bringing uncut heroin and possible murder. An hit man has got in the building and ready to kill Brissac.
Prostitute Juliette White is hanged for murder. Barrister Anthony Brand is contacted by dancer Dolores Dacosta who wants to confess. She claims that she took the victim to White's flat and shot him when found out she stole his wallet.
Detective Swift opens a parcel fitted with a small detonating device that burns his hand. A second parcel bomb arrives containing a live detonator. Swift tells of his old friend Hammond who was instituted but is now threatening his life.
An old Irish habitual criminal gets out of prison and starts work for a confidence man who lures victims with a spiritualism scheme.But one has been led to suicide, and the ex-con has unwittingly stolen valuable evidence.
Sgt. Swift is called to investigate an attack by dogs on a black musician. Despite living under a slum conditions he stays silent. Swift asks Alice Brand to write an article to highlight the racket and discover who the real owner is.
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.
