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) and sea monsters. The season ended with the "Seaview" crew fighting a foreign government to save a defense weapon. The first season included gritty, atmospheric story lines devoted to Cold War themes and excursions into near-future speculative fiction. Many episodes involved espionage and sci-fi elements. Aliens, sea monsters and dinosaurs were featured, but the primary villains were hostile foreign governments. While fantastic, the scripts had a semblance of reality. During the course of the first season, Nelson was promoted from a three-star to a four-star admiral. It was also established that while essentially a marine research vessel, SSRN "Seaview" was