Overview
Steve goes undercover to thwart a plot by disgruntled ex-military men to steal a new missile.
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4 - 1The Return of Bigfoot (I) September 19, 1976 -
4 - 2Nightmare in the Sky September 26, 1976 -
4 - 3Double Trouble October 03, 1976 -
4 - 4The Most Dangerous Enemy October 17, 1976 -
4 - 5H+2+O = Death October 24, 1976 -
4 - 6Kill Oscar (II) October 31, 1976 -
4 - 7The Bionic Boy November 07, 1976 -
4 - 8Vulture of the Andes November 21, 1976 -
4 - 9The Thunderbird Connection November 28, 1976 -
4 - 10A Bionic Christmas Carol December 12, 1976 -
4 - 11Task Force December 19, 1976 -
4 - 12The Ultimate Imposter January 02, 1977 -
4 - 13Death Probe (1) January 09, 1977 -
4 - 14Death Probe (2) January 16, 1977 -
4 - 15Danny's Inferno January 23, 1977 -
4 - 16Fires of Hell January 30, 1977 -
4 - 17The Infiltrators February 06, 1977 -
4 - 18Carnival of Spies February 13, 1977 -
4 - 19U-509 February 20, 1977 -
4 - 20The Privacy of the Mind February 27, 1977 -
4 - 21To Catch the Eagle March 06, 1977 -
4 - 22The Ghostly Teletype March 13, 1977