The Twilight Zone

Instead of the cruise bringing them closer together, the Ransome's agree to get a divorce when they return home. Eileen disappears, and when Allan finds her she is wearing a nightgown that a passenger wore on her honeymoon. Seeing her, Allan realizes how much he still loves her. The passengers force them into a lifeboat, with plenty of provisions, and set them adrift. The Lady Anne sails off.