A murder is witnessed by the victim's little daughter (Gigi Perreau), who immediately goes into a state of shock. All the girl has seen is the shadow of her mother's killer, but the audience knows that the murderer is Ann Sothern. At first Sothern is secure that the girl will never be able to identify her, but as the child shows signs of recovering, Sothern panics. Though the murder was unintentional and the killer is quite fond of the little girl, she nonetheless begins scheming to put the potential witness out of the way. Quite tense at times, especially in the last scene, Shadow on the Wall represents one of the few unsympathetic performances by the otherwise likable Ann Sothern.