Checkmate enlists the help of a Major in the Marines to prevent an action taken against the widow of a dead private. The Marines claim the private never lived.
Stars: Anthony George (Don Corey), Doug McClure (Jed Sills), Sebastian Cabot (Prof Carl Hyatt)
Guest star: Margaret O\'Brien (Angela Kendricks), Richard Lepore (Hal Smith), Katherine Warren (Mrs. Nelson), Forrest Lewis, Joseph Corey, Tyler McVey (Marine Major)
Writer: Harold Clements, William P. McGivern
Director: Don Weis