01. Lassie Meets a Challenge
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02. Sudden Fury
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03. Lassie and the Dynamite
In an area being developed for swimming and fishing, two youngsters playing hooky wander into the blasting zone. Lassie is able to bring help and rescue the boys.
04. Lassie and the Seagull
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05. Charlie Banana
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06. In the Eyes of Lassie
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07. Trouble at Paradise Lake
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08. Little Dog Lost
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09. Lassie's Time of Peril
A flooded river threatens to sweep away a bridge construction project. Ranger Corey Stuart and Lassie brave the raging waters in a small boat to construct a log chain barrier and control the flow of water and logs.
10. In the Midst of Splendor
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11. Lassie Saves a Life
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12. The Waif
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13. Crisis
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14. Pitfall
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15. Temper the Wind
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16. The Gift of Life
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17. Lassie Catches the Poachers
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18. The Town That Wouldn't Die
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19. Just One Old Cow
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20. The Outcast
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21. Cradle of the Deep
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22. The Homesick Hound
A bloodhound needs to be relocated, but he dislikes all his new abodes.
23. The Silent Threat
Corey and another ranger battle a spruce bud worm infestation by spraying but meet resistance from a horse ranch owner. Lassie makes friends with a colt and reveals the true cause of death of one of the horses.
24. The Friendless
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25. Avalanche
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26. Babes in the Woods
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27. Lassie's Rescue Mission
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28. The Doll
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29. The Untamed Land
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30. The Day the Mountain Shook
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31. The Vigil
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32. The Strongest Instinct
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