Sezon 1
Bölümler
1 Population: Zero 18 Oca 1974 
2 Survival of the Fittest 25 Oca 1974 
3 Operation Firefly 1 Şub 1974 
4 Day of the Robot 8 Şub 1974 
5 Little Orphan Airplane 22 Şub 1974 
6 Doomsday, and Counting 1 Mar 1974 
7 Eyewitness to Murder 8 Mar 1974 
8 The Rescue of Athena One 15 Mar 1974 
9 Dr. Wells Is Missing 29 Mar 1974 
10 The Last of the Fourth of Julys 5 Nis 1974 
11 Burning Bright 12 Nis 1974 
12 The Coward 19 Nis 1974 
13 Run, Steve, Run 26 Nis 1974