MurderIsEasy

They were in a large empty-looking station with many platforms. He caught sight of a bookstall some way up the platform with a placard DERBY RESULT. Luke opened the door, jumped out, and ran toward the bookstall. A moment later he was staring with a broad grin at a few smudged lines in the stop press. DERBY RESULT 1st - Jujube the II 2nd - Mazeppa 3rd - Clarigold Luke grinned broadly. A hundred pounds to blow! Good old Jujube the II, so scornfully dismissed by all the tipsters. He folded the paper, still grinning to himself, and turned back - to face emptiness. In the excitement of Jujube the II's victory, his train had slipped out of the station unnoticed by him. "When the devil did that train go out?" he demanded of a gloomy-looking porter. "What train? There hasn't been no train since the 3:14." "There was a train here just now. I got out of it. The boat express." "The boat express don't stop anywhere till London." "But it did," Luke assured him. "I got out of it." Faced by facts, the porter changed his ground. "You didn't ought to have done," he said reproachfully. "It don't stop here." "But it did." "That was signal, that was......