Tyranians are mutants who possess greater physical prowess than non-mutated humans; they can be identified by their dual navels. Their leader discovers that Hunt has knowledge of nuclear power systems, and they offer him great rewards if he can repair their failing nuclear power generator. However, once he is in their power, they attempt to force him to reactivate a nuclear missile system in their possession, with which they intend to destroy their enemies and dominate the region. Hunt is appalled by this small-scale replay of the events which must have led to the Great Conflict. He leads a revolt of the enslaved citizenry, sabotages the nuclear device, and destroys the reactor in a nuclear explosion. Destroyed as well is the entire Tyranian base complex. To Hunt's dismay, the PAX leaders assert their pacifist nature and intentions. They are attempting to rebuild an idealistic society using all which was deemed "good" from Earth's past, and they regard Hunt's interference with a rival civilization and his destructive tactics as antithetical to this end. They also see great good in him and value his knowledge of the past. They ask Hunt to join PAX permanently, but only if he can agree to never take human lives again. Hunt half-heartedly agrees. Security chief Yuloff states that the rationale of taking lives to justify the saving of lives was what allowed the Great Conflict to happen in the first place. Cast Production Screenplay While Roddenberry and Barrett were on vacation in the Bahamas in the summer of 1972, Roddenberry decided he missed working and wrote the screenplay in six weeks. Genesis II was the first of three concepts that Roddenberry hoped to develop into a new science fiction television series following the success of Star Trek (the other two were The Questor Tapes and Spectre). Genesis II aired on CBS on March 23, 1973; although Roddenberry had stories lined up for a 20-episode first season, CBS declined to pick it up, opting instead for the short-lived Planet of the Apes live-action series. The plot point about the Tyranians having a dual circulatory system with two hearts and thus identifiable because they were born with two navels was an elaborate in-joke. While producing Star Trek, Roddenberry was constantly besieged by demands for changes from the censors at NBC's Broadcast Standards department, which he took to calling the "BS Department" due to the often petty nature