Town on Trial

Town on Trial is a 1957 British mystery film directed by John Guillermin and starring John Mills, Charles Coburn, Barbara Bates and Derek Farr. A whole town comes under suspicion when two grisly murders are carried outparticularly members of the local sports club.

A book of love poems, including an inscription from a Peter Crowley, is found in the victims flat. There is also a photo of a group of men together with Molly and Fiona Dixon, a young woman from the prominent Dixon family. Her father, although chocked to learn that his daughter knew the trashy Molly, will not let Halloran question her.Halloran eventually learns that Molly left Peter Crowley for a married man, Mark Roper, who is the clubs secretary. Roper denies any involvement, and also claims that he was giving nurse Elizabeth Fenner a lift to the hospital at the time of the murder. ........

Source: Wikipedia