Lady on a Train

Durbin plays a girl who witnesses a murder from the window of a train pulling into New York, is believed by no one, and so turns to detection herself, becoming entangled with the victim's sinisterly bizarre family (which includes the killer). With a strong supporting cast, it's surprisingly entertaining. The plot, derived from a story by Leslie Charteris previously filmed in Britain as A Window in London, doesn't delve into the dark chaos beloved of noir thrillers in the '40s so much as play it slightly tongue-in-cheek. Light, cheery and shading into darker areas for the climax, it's fun.