AllMovie

Moving from Saturday to Thursday evening for its sixth season on CBS, Perry Mason kicks off the new year with another baffling murder case. This time the victim is Joseph Kraft (Maurice Manson) a crooked book dealer who traffics in forgeries of rare first editions. Not long after firing his clerk Ellen Carter (Phyllis Love) for misplacing a copy of Tristam Shandy), Kraft is found dead in a locked room, apparently the victim of a gas leak. Ultimately, the police decide that Kraft was murdered, and that Ellen is the most likely suspect. Enter Perry Mason (Raymond Burr), who intends to prove Ellen's innocence while setting a trap for the real killer.