Philip MacDonald (who some give as 1896 or 1899 as his date of birth) was the grandson of the writer George MacDonald and son of the author Ronald MacDonald and the actress Constance Robertson. During World War I he served with the British cavalry in Mesopotamia, later trained horses for the army, and was a show jumper. He also raised Great Danes. After marrying the writer F. Ruth Howard, he moved to Hollywood in 1931. He was one of the most popular mystery writers of the 1930s, and between 1931 and 1963 wrote many screenplays along with a few radio and television scripts. His detective novels, particularly those featuring his series detective Anthony Gethryn, are primarily "whodunnits" with the occasional locked room mystery. His first detective novel was 'The Rasp' (1924), in which he introduced his character Anthony Gethryn. In later years MacDonald wrote television scripts for Alfred Hitchcock Presents ('Malice Domestic', 1957) and Perry Mason ('The Case of the Terrified Typist', 1958). He twice received an Edgar Award for Best Short Story: in 1953, for 'Something to Hide', and in 1956, for 'Dream No More'. Indeed many critics felt that his short story writing was superior to his novels and they did win five second prizes in the annual contests held by 'Ellery Queen's Mystery Magazine'. He also wrote under the pseudonyms Oliver Fleming, Anthony Lawless, Martin Porlock, W.J. Stuart and Warren Stuart.