12 - 1Lassie Meets a Challenge Sep. 12, 1965- 12 - 2Sudden Fury Sep. 19, 1965
- 12 - 3Lassie and the Dynamite Sep. 26, 1965
- 12 - 4Lassie and the Seagull Oct. 03, 1965
- 12 - 5Charlie Banana Oct. 10, 1965
- 12 - 6In the Eyes of Lassie Oct. 17, 1965
- 12 - 7Trouble at Paradise Lake Oct. 24, 1965
- 12 - 8Little Dog Lost Oct. 31, 1965
- 12 - 9Lassie's Time of Peril Nov. 07, 1965
- 12 - 10In the Midst of Splendor Nov. 14, 1965
- 12 - 11Lassie Saves a Life Nov. 21, 1965
- 12 - 12The Waif Nov. 28, 1965
- 12 - 13Crisis Dec. 05, 1965
- 12 - 14Pitfall Dec. 12, 1965
- 12 - 15Temper the Wind Dec. 19, 1965
- 12 - 16The Gift of Life Dec. 26, 1965
- 12 - 17Lassie Catches the Poachers Jan. 02, 1966
- 12 - 18The Town That Wouldn't Die Jan. 16, 1966
- 12 - 19Just One Old Cow Jan. 23, 1966
- 12 - 20The Outcast Jan. 30, 1966
- 12 - 21Cradle of the Deep Feb. 06, 1966
- 12 - 22The Homesick Hound Feb. 13, 1966
- 12 - 23The Silent Threat Feb. 20, 1966
- 12 - 24The Friendless Feb. 27, 1966
- 12 - 25Avalanche Mar. 06, 1966
- 12 - 26Babes in the Woods Mar. 13, 1966
- 12 - 27Lassie's Rescue Mission Mar. 20, 1966
- 12 - 28The Doll Mar. 27, 1966
- 12 - 29The Untamed Land Apr. 03, 1966
- 12 - 30The Day the Mountain Shook Apr. 17, 1966
- 12 - 31The Vigil Apr. 24, 1966
- 12 - 32The Strongest Instinct May. 01, 1966