Shadow on the Wall

David Stirrling returns from a business trip with gifts for his six-year-old daughter Susan, and for his wife, Susan's step-mother, Celia. He also has some World War II souvenirs, including a handgun. Celia is not there when David arrives, she's with Crane Weymouth, with whom she is having an affair. Crane is the fiancé of Celia's sister, Dell Faring. David sees her getting out of Crane's car, so he realizes that her story of seeing a matinee with a girl friend is untrue.