This film is based on the 1971 Baker Street robbery (one of the most lucrative bank robberies in British history). This semi-fictional version of the robbery puts forth the theory that the robbery was set up to secure sexually compromising photographs of Princess Margaret. The subject is fascinating as are the characters. Some of the bad guys turn out to be good guys and some of the good guys turn out to be bad guys and some of the bad guys are actually bad guys. The primary interest is the story and an interesting story it is.