In Tiger Bay, the docklands of Cardiff, rough-and-tumble street urchin Gillie witnesses the brutal killing of a young woman at the hands of visiting Polish sailor Korchinsky. Instead of reporting the crime to the authorities, Gillie merely pockets a prize for herself — Korchinsky's shiny black revolver — and flees the scene. When Detective Graham discovers that Gillie has the murder weapon, the fiery young girl weaves a web of lies to throw him off course.
Tiger Bay is a 1959 British crime drama film directed by J. Lee Thompson. It stars John Mills as a police superintendent investigating a murder; his real-life daughter Hayley Mills, in her first major film role, as a girl who witnesses the murder; and Horst Buchholz as a young sailor who commits the murder in a moment of passion. The title refers to the Tiger Bay district of Cardiff, where much of the film was shot.