4 - 1Poisoned Snow Sep. 11, 1975
4 - 2The Glass Dart Board Sep. 18, 1975
4 - 3No Place to Hide Sep. 25, 1975
4 - 4Men Will Die Oct. 02, 1975
4 - 5School of Fear Oct. 09, 1975
4 - 6Deadly Silence Oct. 16, 1975
4 - 7Murder by Proxy Oct. 23, 1975
4 - 8Trail of Terror Oct. 30, 1975
4 - 9Web of Lies Nov. 06, 1975
4 - 10Dead Air Nov. 13, 1975
4 - 11Merchants of Death Nov. 20, 1975
4 - 12The Cat's Paw Dec. 04, 1975
4 - 13Spooks for Sale Dec. 11, 1975
4 - 14Most Likely to Succeed Dec. 18, 1975
4 - 15Police Buff Jan. 08, 1976
4 - 16The Honorable Profession Jan. 15, 1976
4 - 17Requiem for Murder Jan. 22, 1976
4 - 18Underground Jan. 29, 1976
4 - 19Judgment Day Feb. 19, 1976
4 - 20Clown of Death Feb. 26, 1976
4 - 21Superstar Mar. 04, 1976
4 - 22Alien Country Mar. 11, 1976
4 - 23Runaway Mar. 18, 1976