- 1
Lassie at the Grand Canyon
Ruth and Timmy, visiting the Grand Canyon, befriend a blind pianist with a unique outlook on life who helps Timmy after he is angered by Lassie's behavior when she follows him on a mule ride and he's forced to turn back.
- 2
The Bloodhound
Timmy and Lassie discover the sad truth about Relentless, Cully's new--and much bragged about--dog: he's lost his sense of smell. The truth might have remained secret had not the money earned in a church fundraising drive gone missing.
- 3
The Mysterious Intruder
The Gardners, the Martins' new neighbors, accuse Lassie of killing their cat and attacking their sheep, but Lassie knows there's a strange collie in the area.
- 4
The Badger Game
- 5
The Outlaw
After a police dog and policeman befriended by Timmy and Lassie are shot by a bank robber, the dog on the loose becomes aggressive to the point of attack and might be killed by authorities except the dog is gentled by Timmy and Lassie.
- 6
The Winner
- 7
Heat Wave
- 8
The Deer
- 9
Lassie Adopts the Fire Chief
When the fire chief's Dalmatian is killed at a fire, Timmy loans Lassie to the chief for during the day but Lassie becomes enthralled with the fire engine and fire chasing to the extent she ignores Timmy.
- 10
The Pied Piper
- 11
Joey
- 12
Lassie's Wild Baby
- 13
The Dognappers
A pair of men steal dogs for ransom until they lock up Lassie after stealing Lassie with their vehicle at which time Lassie frees the stolen dogs and alerts the law.
- 14
The Dove
An illegally entered Mexican boy found injured by Timmy places the Martins in legal jeopardy as both Timmy and the Mexican boy struggle with doing the right thing.
- 15
Yochim's Christmas
- 16
The Parrot
- 17
Lassie's Protege
Lassie, lonely when Timmy returns to school after a vacation, befriends a raccoon. She is devistated when the raccoon, whom Timmy named Melonhead, is run over by young drag racer Johnny Sexton.
- 18
The Black Sheep
- 19
The Partnership
A colt Timmy finds after a forest fire and wants to keep must be auctioned by the county and, when it appears Timmy will lose the bid, Washburne puts up money on the condition Timmy will house but then the mare comes looking for the colt.
- 20
The Hike
Disobedient Timmy hikes in the woods alone because his hiking partner is sick and is knocked unconscious after slipping down an embankment as a forest fire starts.
- 21
Bird of Prey
- 22
Casey
- 23
The Odyssey I
- 24
The Odyssey II
- 25
The Odyssey III
- 26
Double Trouble
- 27
Eager Beaver
- 28
Lassie and the Eagle
- 29
The Vindication of Relentless
- 30
The Unwanted
- 31
The Musher
- 32
Lassie's Good Deed
- 33
Sanctuary
- 34
Lassie and the Calf
- 35
Elephant Sitters
- 36
Lassie and the Tiger
An animal trainer permits his tiger to swim in the fishing hole at which time it flees at Lassie' s bark and terrorizes the Martins while Sheriff Miller's posse is on the hunt and the trainer attempts to prevent the animal's destruction.