An American (Keith Andes) in London searching for the girlfriend (Julia Arnall) of his dead brother who is a model when he meets a woman (Hazel Court) who works with her. However the agency they work for gets them involved in theft and murder. This is a pretty standard British crime drama, with Hazel Court fine as the innocent woman caught up in the crime and falling in love with the main suspect, with support from Jean Aubrey as her sister.