Who wrote the play on which Alfred Hitchcock's first Technicolor film was based ?
Under Capricorn:  This was Hitchcock's second film in Technicolor, and like the preceding color film "Rope" (1948), it also featured 10-minute takes. Rope (film): Rope is a 1948 American psychological crime thriller film noir directed by Alfred Hitchcock, based on the 1929 play of the same name by Patrick Hamilton, adapted by Hume Cronyn and with a screenplay by Arthur Laurents.
Patrick Hamilton,