Seasons and episodes
1Season 1 Jan. 30, 1977
1 - 1The Mystery of the Haunted House Jan. 30, 1977- 1 - 2The Mystery of Pirate's Cove Feb. 06, 1977
- 1 - 3The Mystery of Witches' Hollow Feb. 13, 1977
- 1 - 4The Mystery of the Diamond Triangle Feb. 20, 1977
- 1 - 5The Disappearing Floor Mar. 06, 1977
- 1 - 6The Secret of the Whispering Walls Mar. 13, 1977
- 1 - 7The Flickering Torch Mystery Mar. 27, 1977
- 1 - 8A Haunting We Will Go Apr. 03, 1977
- 1 - 9The Mystery of the Flying Courier Apr. 10, 1977
- 1 - 10Mystery of the Fallen Angels Apr. 17, 1977
- 1 - 11Wipe Out Apr. 24, 1977
- 1 - 12The Mystery of Ghostwriters' Cruise May. 01, 1977
- 1 - 13The Secret of the Jade Kwan Yin May. 15, 1977
- 1 - 14Mystery of the Solid Gold Kicker May. 22, 1977
2Season 2 Sep. 11, 1977
- 2 - 1The Hardy Boys and Nancy Drew Meet Dracula (1) Sep. 11, 1977
- 2 - 2The Hardy Boys and Nancy Drew Meet Dracula (2) Sep. 18, 1977
- 2 - 3The Mystery of King Tut's Tomb Sep. 25, 1977
- 2 - 4The Mystery of the Hollywood Phantom (1) Oct. 02, 1977
- 2 - 5The Mystery of the Hollywood Phantom (2) Oct. 09, 1977
- 2 - 6Mystery of the African Safari Oct. 16, 1977
- 2 - 7The Creatures Who Came On Sunday Oct. 30, 1977
- 2 - 8Strange Fate of Flight 608 Nov. 06, 1977
- 2 - 9Acapulco Spies Nov. 13, 1977
- 2 - 10Nancy Drew's Love Match Nov. 20, 1977
- 2 - 11The Mystery of the Silent Scream Nov. 27, 1977
- 2 - 12Will the Real Santa Claus..? Dec. 18, 1977
- 2 - 13The Lady on Thursday at Ten Jan. 01, 1978
- 2 - 14Oh Say Can You Sing Jan. 08, 1978
- 2 - 15The House on Possessed Hill Jan. 22, 1978
- 2 - 16Sole Survivor Jan. 29, 1978
- 2 - 17Voodoo Doll (1) Feb. 12, 1978
- 2 - 18Voodoo Doll (2) Feb. 19, 1978
- 2 - 19Mystery on the Avalanche Express Feb. 26, 1978
- 2 - 20Death Surf Mar. 12, 1978
- 2 - 21Arson and Old Lace Apr. 01, 1978
- 2 - 22Campus Terror May. 07, 1978
3Season 3 Oct. 02, 1978
- 3 - 1The Last Kiss of Summer (1) Oct. 02, 1978
- 3 - 2The Last Kiss of Summer (2) Oct. 08, 1978
- 3 - 3Assault on the Tower Oct. 15, 1978
- 3 - 4Search for Atlantis Oct. 22, 1978
- 3 - 5Dangerous Waters Oct. 29, 1978
- 3 - 6Scorpion's Sting Nov. 05, 1978
- 3 - 7Defection to Paradise (1) Nov. 19, 1978
- 3 - 8Defection to Paradise (2) Nov. 26, 1978
- 3 - 9Game Plan Dec. 03, 1978
- 3 - 10Life on the Line Jan. 14, 1979
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