Weeping, she appeals to the heavens for a true message. It is the  Inspector who knocks, but the message is real, she says, pointing to the knife embedded in the ceiling. There are no fingerprints on it, and Marney remembers Nell's handkerchief, which shows a blood spot. Her mother begs for a chance to identify the killer. They recreate the séance, with Wales' body propped up in his chair. The Inspector warns everyone to be very aware of their neighbors' hands. The action of a hand may give the murderer away. In the dark, Nell cries out that Wales is moving. The lights flash on to show Wales' upraised arm pointing to the knife in the ceiling. The Inspector asks Mason to show his hands, which are quite clean.
Weeping, she appeals to the heavens for a true message. It is the Inspector who knocks, but the message is real, she says, pointing to the knife embedded in the ceiling. There are no fingerprints on it, and Marney remembers Nell's handkerchief, which shows a blood spot. Her mother begs for a chance to identify the killer. They recreate the séance, with Wales' body propped up in his chair. The Inspector warns everyone to be very aware of their neighbors' hands. The action of a hand may give the murderer away. In the dark, Nell cries out that Wales is moving. The lights flash on to show Wales' upraised arm pointing to the knife in the ceiling. The Inspector asks Mase to show their hands, which are quite clean.