Episode 1
All of Lassie's pups have been given away except for Laddie, the runt, and she hides him in an abandoned mineshaft to keep him with her.
Episode 2
When Jeff and Porky see pit bull terriers, Gramps suspects illegal dogfights are being held in the area.
Episode 3
Jeff and Lassie find a litter of abandoned kittens and are horrified when Gramps says to leave them alone; that they can't be saved and will probably starve.
Episode 4
Porky enters Lassie in the Capitol City Dog Show obedience trials without knowing what the procedure is, but Jeff finds out what's involved and trains her.
Episode 5
A new teacher has forbidden the children from bringing dogs into the classroom and one of Jeff's classmates is determined to do something about it.
Episode 6
Jeff teaches Lassie to howl when he plays the violin, hoping to get out of lessons, but Ellen sees through the scheme
Episode 7
There is a weird ""monster"" in the lake making unearthly noises--but it turns out to be a displaced seal, which Jeff promptly tries to adopt.
Episode 8
Lassie comes down with an odd ailment. The kids are convinced that a creepy old lady they call the "witch woman" has cast a spell on the dog.
Episode 9
Jeff nurses a wild duck back to health but when he releases it back to the wild, he fears the duck may be the victim of poachers in the area.
Episode 10
Jeff and Gramps are jealous when Clay Horton takes Ellen out on a date.
Episode 11
The boys start printing a newspaper to make themselves some pocket money--but the material they print gets them into hot water instead.
Episode 12
After an itinerant clown and his dog entertain at a church carnival, the man is accused of robbing a neighbor.
Episode 13
The Millers batten down the hatches as a severe storm approaches.
Episode 14
Jeff and Ellen plan a surprise party for Gramps so well that Gramps feels neglected on his birthday and ""runs away.""
Episode 15
A gypsy girl and her family camp on the Miller farm, despite neighbors' reports of thievery.
Episode 16
A television set meant for the Brockways is delivered to the Millers.
Episode 17
In a quest for a valuable stamp, the boys begin quarreling with each other.
Episode 18
When Lassie is impounded in Capitol City for lack of tag and leash, Jeff learns that most of the dogs in the pound are to be killed so he brings, much to the consternation of Ellen, the dogs to the farm so he can find them homes.
Episode 19
Matt Brockway says Pokey is useless and tells Porky he is going to give the dog away.
Episode 20
When Gramps refuses to sell the farm to nasty Emmet Carey, Edgar Carey pretends that a barbed wire scratch he got in the barn is Lassie's bite, figuring the Millers will give up the farm before giving up Lassie
Episode 21
Jeff and Porky horrify Gramps by trying to tame a red-tailed hawk as a hunting falcon.
Episode 22
The boys quarrel over Pokey being able to sleep in their new tree house.
Episode 23
The Millers welcome a Japanese exchange student--and run into bigotry from a neighbor who has never gotten over World War II.
Episode 24
The boys' journey on their new raft is hampered by the fact that Porky can't swim.
Episode 25
When Gramps and Ellen tell him that Lassie is going blind, Jeff takes the dog on a long journey to find the doctor that can restore her sight.
Episode 26
Jeff decides he wants to be a veterinarian, and his first patient is the Miller cow.
Episode 27
Ellen accidentally brings home a valuable champion collie from a dog show rather than Lassie--and is accused of theft!
Episode 28
Jeff and Porky, told to babysit little Janie, leave the child with Lassie while they run to see construction equipment at work, not knowing Janie is following them.
Episode 29
After a friend's mother is involved in a serious car accident, Jeff becomes over protective of Lassie.
Episode 30
Jeff, in charge of collecting money for Sunday School, loses the contributions and has no way of replacing them.
Episode 31
Jeff discovers that a new classmate's father is jacklighting deer.
Episode 32
A disreputable horse dealer schemes to buy Jeff's colt cheaply by proving to Gramps that the horse is vicious.
Episode 33
One of Lassie's puppies, Comet, mistreated by its owner, has turned wild.
Episode 34
Jeff and Porky enter the world of business when they take a 4-H calf home from the county's fair, intent on raising it to sell for the price of an outboard motor. In their care, the calf grows into a prize-winning heifer.
Episode 35
Gramps' blames Lassie's son Laddie's illness on the spray used by a local crop duster.
Episode 36
Jeff persuades a neighbor to buy a rehabilitated war dog, only to have the dog exhibit aggressive behavior. Joe Brown: James Griffith.
Episode 37
Ellen battles with Jeff to go get a haircut--until the unexpected happens.
Episode 38
Jeff and Porky quarrel over a new girl in town, who is happily playing one boy off another!
Episode 39
When Jeff and Porky discover their competition jumping frog is female and about to lay eggs, they drive Gramps and Ellen to exhaustion in their quest to see the eggs are fertilized and produce offspring.
