The best episode written by John Goldsmith is "Seed of Destruction", rated 6/10 from 1 user votes. It was "directed by Kevin Connor". "Seed of Destruction" aired on 11/11/1976 and is rated 5.0 point(s) higher than their second highest rated, "Catacombs of the Moon".
Whilst he is exploring an asteroid Koenig is taken over by an alien race known as the Kalthon, who replace him with an exact double. In consequence every action ordered by the fake Koenig is solely for the benefit of the Kalthon and to the detriment of the welfare of the Alphans. Helena realizes that something is wrong when 'Koenig' is cold to the touch and needs to convince the other crew members.
Director: Kevin Connor
Writer: John Goldsmith
Ship's engineer Patrick Osgood believes he can obtain titanium, to make a new heart for his sick wife Michelle, from the catacombs of the moon, using dynamite. The explosion which follows gives him a vision of the future in which the ship is pursued by a fireball and this comes true. Though Helena is making a new heart for Michelle, Osgood becomes impatient and drags his wife back into the catacombs, giving Koenig a double task - to avoid the fireball and save the Osgoods.
Director: Robert Lynn
Writer: John Goldsmith