Voyage to the Bottom of the Sea
First aired: March 10, 1968
After Nelson and Kowalski are captured by aliens who are plotting to destroy the Earth, Crane attempts to rescue them with the help of a peace-loving alien who wants to thwart the plans of his comrades.
Starring Richard Basehart (Admiral Nelson), David Hedison (Capt. Crane)
Guest Cast: Skip Homeier, Kevin Hagen