Voyage to the Bottom of the Sea (TV series) as Admiral Park, a colleague of Nelson's who substituted for him. Basehart returned for "Return of the Phantom," the final episode of the season. The third season of "Voyage to the Bottom of the Sea" ran simultaneously with two other series produced by Irwin Allen, "Lost in Space" (in its second season) and "The Time Tunnel". The third season began with Dick Tufeld of "Lost in Space" playing an evil disembodied brain from outer space. The season continued with a werewolf story that is one of the few episodes to inspire a sequel. In one episode, the "Seaview"'s officers and
Voyage to the Bottom of the Sea (TV series) season of 32 episodes began with Admiral Nelson and the crew of the "Seaview" fighting against a foreign government to prevent a world-threatening earthquake, and continuing with a foreign government destroying American submarines with new technologies in "The Fear Makers" and "The Enemies". The season also had several ocean peril stories in which the "Seaview" crew spent the episode dealing with the normal perils of the sea. Two examples are "Submarine Sunk Here" and "The Ghost of Moby Dick". The season introduced a diving bell and a mini-submarine, and the first episodes featuring extraterrestrials (Don Brinkley's "The Sky is Falling")