While watching from her train window, Nikki Collins witnesses a murder in a nearby building. When she alerts the police, they think she has read one too many mystery novels. She then enlists a popular mystery writer to help her solve the crime on her own, but her sleuthing attracts the attentions of suitors and killers.
Cast: Deanna Durbin, Ralph Bellamy, David Bruce, George Coulouris, Allen Jenkins, Dan Duryea, Edward Everett Horton, Patricia Morison, Maria Palmer, Elizabeth Patterson
