4 - 1The Return of Bigfoot (I) Sep. 19, 1976- 4 - 2Nightmare in the Sky Sep. 26, 1976
- 4 - 3Double Trouble Oct. 03, 1976
- 4 - 4The Most Dangerous Enemy Oct. 17, 1976
- 4 - 5H+2+O = Death Oct. 24, 1976
- 4 - 6Kill Oscar (II) Oct. 31, 1976
- 4 - 7The Bionic Boy Nov. 07, 1976
- 4 - 8Vulture of the Andes Nov. 21, 1976
- 4 - 9The Thunderbird Connection Nov. 28, 1976
- 4 - 10A Bionic Christmas Carol Dec. 12, 1976
- 4 - 11Task Force Dec. 19, 1976
- 4 - 12The Ultimate Imposter Jan. 02, 1977
- 4 - 13Death Probe (1) Jan. 09, 1977
- 4 - 14Death Probe (2) Jan. 16, 1977
- 4 - 15Danny's Inferno Jan. 23, 1977
- 4 - 16Fires of Hell Jan. 30, 1977
- 4 - 17The Infiltrators Feb. 06, 1977
- 4 - 18Carnival of Spies Feb. 13, 1977
- 4 - 19U-509 Feb. 20, 1977
- 4 - 20The Privacy of the Mind Feb. 27, 1977
- 4 - 21To Catch the Eagle Mar. 06, 1977
- 4 - 22The Ghostly Teletype Mar. 13, 1977
- 4 - 23The Ghostly Teletype May. 15, 1977
