A Dangerous Affair is a 1931 American pre-Code mystery film directed by Edward Sedgwick and starring Jack Holt, Ralph Graves and Sally Blane.
Members of the Randolph family assemble to hear how millions of dollars will be distributed according to a will, but the attorney in charge is murdered. A police lieutenant eventually finds the murderer in a film that Harrison's Reports said included "every known device to hold the spectator in breathless suspense â trap doors, mysterious murders and disappearances, screams, and bony arms protruding from behind half-closed doors, grabbing unsuspecting victims by the throat ...".