Learn English easily. The whodunit, a very short detective story, is a British invention and domain – and is perfectly suited for dtv's bilingual format: the very short crime novel. The book presents, in English-German parallel text, six masterpieces of the genre. They are thrilling, entertaining, and rich in local color. Margery Allingham: Three is a lucky number, Arthur Conan Doyle: Silver Blaze, Cyril Hare: Miss Burnside's Dilemma, Ronald Knox: Solved by Inspection, Dorothy L. Sayers: Murder at Pentecost, Julian Symons: The Murderer. The volume was previously published under the title Three is a lucky number.