Line Engaged is a 1935 British, black-and-white, thriller directed by Bernard Mainwaring and starring Ronald Shiner as Ryan[1] It was produced by British Lion Film Corporation.
Eva Rutland (played by Jane Baxter), the wife of caddish Gordon (Leslie Perrins), is in love with David Morland (Bramwell Fletcher), a successful novelist. David's father, an Inspector (Arthur Wontner) gives his son a cast iron murder plot. Later, when Gordon is shot, it seems David has fulfilled his father's hypothetical musings.