“Vintage Hitchcock: A Live Radio Play” is an evening of radio play adaptations of three early films directed by Alfred Hitchcock. In “The Lodger,” a landlady suspects her mysterious new tenant may be a serial killer. In “The Lady Vanishes,” a young woman on vacation triggers an international incident when she tries to track an elderly friend who has disappeared. And, finally, in “The 39 Steps,” a man falsely accused of murder races across Scotland handcuffed to the beautiful blonde who turned him in. These stories come to life in the style of a 1940s radio broadcast, with five actors playing dozens of characters, live sound effects and musical underscoring.