1 - 1Population: Zero Jan. 18, 1974
1 - 2Survival of the Fittest Jan. 25, 1974
1 - 3Operation Firefly Feb. 01, 1974
1 - 4Day of the Robot Feb. 08, 1974
1 - 5Little Orphan Airplane Feb. 22, 1974
1 - 6Doomsday, and Counting Mar. 01, 1974
1 - 7Eyewitness to Murder Mar. 08, 1974
1 - 8The Rescue of Athena One Mar. 15, 1974
1 - 9Dr. Wells Is Missing Mar. 29, 1974
1 - 10The Last of the Fourth of Julys Apr. 05, 1974
1 - 11Burning Bright Apr. 12, 1974
1 - 12The Coward Apr. 19, 1974
1 - 13Run, Steve, Run Apr. 26, 1974