The facts of the murder are that Janet Mackenzie, on her night off, returned to Miss French's house briefly at half-past-nine and heard voices in the sitting-room. One was Miss French and the other was a man's. The next morning, the body of Miss French was found, killed with a crowbar, and several items had been taken from the house. Burglary was at first suspected, but Miss Mackenzie's suspicions of Vole pointed the police in his direction and led eventually to his arrest. Vole, though, is delighted to hear of Miss Mackenzie's testimony about the visitor at nine-thirty, as he was with his wife, Romaine, at the time, and she can provide him with an alibi.