The Cutlers go fishing with friends (Don Wilson and Lurene Tuttle) in a launch on a section of the Niagara River above the Falls. When the boat moors in Chippawa for gasoline and other supplies, George steals it with Polly on board. She tells him to give himself up as it was self-defense, but he tells her he can't because he's killed Rose. The police set out in pursuit. The boat runs out of gas and drifts towards the Falls. As they near the edge, George scuttles the boat to slow it down and manages to get Polly onto a large rock before he goes over the Falls to his death. Polly is rescued from the rock by a helicopter.