to trick Dietrichson into signing what he thinks is a renewal. The policy has a double indemnity clause that pays double for an accidental death due to rare circumstances. Later, Phyllis drives her husband to the train station to attend his college reunion. Walter hides in the back seat, kills him and boards the train posing as Mr. Dietrichson. After the train gets underway, Walter goes to the outdoor platform at the back, ostensibly to smoke. He jumps off at a prearranged spot to meet Phyllis and drag Dietrichson's body onto the tracks. Norton, the company's president, believes the death was suicide, but Keyes dismisses this theory. Soon, however, he begins to have doubts about the claim's legitimacy. Keyes tells Walter his theory while Phyllis hides behind the door: that she had an accomplice murder Dietrichson for the insurance money. However, he has no proof. The victim's daughter, Lola, tells Walter she is convinced that her stepmother Phyllis is behind her father's death. Lola's mother also died under suspicious circumstances, and Phyllis was her nurse. Realizing Phyllis has killed before, Walter begins seeing Lola to keep her from going to the police with her suspicions, and later through guilt and to protect her from her stepmother. Walter fears Phyllis will murder Lola over her suspicions and because Dietrichson had changed his will in Lola's favor, leaving Phyllis nothing. Keyes finds a witness who says the man on the train was younger than the dead man. Walter warns Phyllis that pursuing the insurance claim in court risks exposing the murder. He tries to convince her to lie low and let him try to convince Norton to pay out the claim. Lola tells Walter she has discovered that her boyfriend, the hotheaded Nino Zachette, has been seeing Phyllis behind her back. Walter confronts Phyllis and tells her that he knows about her and Zachette. He guesses she is planning for Zachette to kill Lola and him, but tells her that he intends to kill her and frame Zachette. Phyllis shoots Walter in the shoulder, but finds herself unable to finish him off, realizing that she cares for someone else for the first time in her life. Walter does not believe Phyllis and kills her. He waits for Zachette and advises him not to enter the house. He convinces him to call Lola. Walter drives to the office and turns on the dictaphone,