Underground

Underground is the fourth episode in the series. It aired October 20, 1968.

Plot
The Earth people witness the hand over of an envelope between two men, but the recipient is shot by police and the letter confiscated. Steve soon receives a radio call from someone who claims to be a pilot of another Earth ship. Suspicious of the call, Steve decides to check it out, but a curious Fitzhugh and Valerie follow him. All three are captured by the man who made the letter drop, who claims to be part of an underground political movement. He forces Steve and Fitzhugh to sneak the letter out of the police station and holds Valerie hostage until they comply.

Cast

 * Gary Conway as Captain Steve Burton
 * Don Marshall as Dan Erickson
 * Heather Young as Betty Hamilton
 * Don Matheson as Mark Wilson
 * Deanna Lund as Valerie Scott
 * Stefan Arngrim as Barry Lockridge
 * Kurt Kasznar as Alexander Fitzhugh

Supporting Cast

 * John Abbott as Professor Gorak
 * Paul Trinka as Giant Guard #1
 * Jim Gosa as Giant Guard #2
 * Jerry Catron as a Giant Sentry
 * Lance LeGault as a Giant Policeman
 * Ivan Markota as a Giant Fugitive

Notes & Trivia

 * Coming Up