Episode 36 of "The Invaders"
s02e19 The Pit

Title: The Pit

Original Air Date: 01/16/1968 on ABC

Director: Louis Allen
Writer: Jack Miller

Guest Stars: Dort Clark (Officer), Bartlett Robinson (Llewellan), Pat O'Hara (Scientist), Simon Scott (John Slaton), Michael Harris (Guard), Noah Keen (Meyers), Johnny Jenson (Frank Reed), Joanne Linville (Patricia Reed), Don Harron (Jeff Brower), Lisabeth Field (Mrs Fielding)