Lady on a Train

By the mid-1940s, Universal's singing superstar, the twice-married Deanna Durbin, had outgrown her innocent ingenue image, and although her postwar films were mostly bland, Lady on a Train is a delicious hybrid of '40s romantic comedy and Agatha Christie mystery. A glamorous Deanna witnesses a murder, gets mixed up with the dead man's wacky family, and croons Cole Porter's "Night and Day" with throbbing allure. Five more Durbin features followed--but you're wise to make this smartly crafted Train, complete with surprising denouement, your final stop. (official distributor synopsis)