Paul Dehn was the screenwriter for which 1974 British mystery?
Murder on the Orient Express (1974 film) Murder on the Orient Express is a 1974 British mystery film directed by Sidney Lumet, produced by John Brabourne and Richard B. Goodwin, and based on the 1934 novel of the same name by Agatha Christie.
W. F. Morris Walter Frederick Morris (31 May 1892–1975) was an English novelist, best known for his mystery novel, "" (1929), set in World War I. Critic A.C. Ward praised this as "an adventure-mystery war-novel with an admirably ingenious and leak-proof plot. This book combines a brilliant exercise of creative imagination with a remarkable ability to reproduce, vividly, first-hand experiences, and there is one brief battle-scene…which is memorable.” ("The Nineteen-Twenties, Literature and Ideas in the Post-War Decade", 1930, pp 163–4). Spy novelist Eric Ambler named the book as one of his top five spy stories (in the Afterword to the 1952 edition of his "Epitaph for a Spy").