Uncle Steve is shot by an over-eager hunter and Lassie is impounded for attacking the hunter. Now Will must rescue his canine friend and Lassie must get help for the unconscious Steve.
After accidentally getting locked in the back of a truck, Lassie finds herself lost in the city and must find her way home, befriending a runaway along the way.
Lassie brings a stray dog home, and Dee accidentally gives it to a dog thief before the real owner arrives to claim it.
Thinking that Lassie is crowding his chances, Megan's boyfriend locks Lassie in the McCullough's car during a major heat wave.
Megan and her friend mysteriously become sick after skinny-dipping in a stream. Chris, Will and Lassie do some investigating and learn that the cause may be linked to illegal chemical dumping.
Will's buddy Wayne is determined to play a prank on an elderly neighbor the night before Halloween, but he may not be the only one surprised.
A woman claims to be Lassie's true owner, but to Steve's shock is revealed to be part of his past as well.
A miniature horse that Will is temporarily taking care of becomes the source of contention between the McCulloughs and a neighbor who's a local politician.
Neil, an autistic boy whose mother is being helped to find a job by Dee, befriends Lassie and forms a bond with her.
The family is excited when Lassie is expecting her first litter, but it almost takes second place in Will's attention, as his BMX bike club the Glen Ridge Riders is competing in local competitions.
Mr. Shepherd, a mysterious magician fails to impress Megan with hocus-pocus until his performance at a benefit show.
Will joins his friend Arnie in a prank that closes the school for the day, freeing the boys to get into more trouble.
The McCulloughs' accidental houseguest is a dour man who doesn't like children or animals, but he hides a surprising secret.
Dee and Lassie are trapped by a storm inside an old house on the same day she receives some potentially devastating news from her doctor.
At a party, Will is the intended target of a practical joke, but the joke turns serious when both he and the joker are trapped beneath a crumbling structure.
Chris and Dee are off celebrating an anniversary, Will is at a friend's and Megan and Lassie are home when a boy accidentally crashes his motorcycle into the garage, but no one knows that the accident ruptured a gas pipe.
Uncle Steve returns and takes Megan and Will hang-gliding, but when the glider crashes with Steve and Will aboard, Lassie and Megan must find a way to save them.
The McCulloughs visit a ghost town to find out more about Dee's Old West ancestor, but Will and Lassie wind up facing a modern-day outlaw.
Ancient Indian relics originally uncovered by the McCulloughs are in danger of being stolen from the site, and Dee's archaeologist friend may be involved.
Chris' new job is located on a former military shelling site that's supposed to have been cleared, but when Will, Megan and Lassie wander onto it they find themselves surrounded by still-live shells.
Laid up at home alone with an injured leg is not the safest place for Will to be when the McCullough house is targeted by a pair of neighborhood burglars.
Will and Lassie are trapped inside a closed store with a rattlesnake that's already bitten the owner, and there's no way to call for help.
An earthquake knocks a live power line loose onto a building site's wire fence while Will is trapped on the wrong side.
A boy in a wheelchair teaches Will and Lassie how to play basketball and also has a huge crush on Will's sister, Megan.
Will takes a dare to enter an abandoned house so he can win some coveted baseball cards from his friend Arnie.
Will's elderly friend Horace may have to give away his little dog Sandy when his landlady decides to forbid pets after her house is renovated.
Megan enters Lassie in a high-society dog show as a way of getting acquainted with handsome Peter Colfax.
The McCulloughs drop Will, Megan, and Tracy at the beach for the day.
Will, trying to impress Frankie by entering an essay contest, plagarizes a piece about a first kiss that Megan wrote in her diary.
At the annual MacPherson/McCullough clan gathering, Megan falls for the cute son of the MacPherson clan chief.
A convicted murderer escapes from jail with one thought: to get revenge on the man who helped convict him, the proprietor of a soon-to-be-opening Glen Ridge hardware store.
A man drops three kittens in a box off at the Willingham Animal Shelter.
Feelings come to a head at a slumber party given by the McCulloughs
Will and Lassie's ESP act to raise money for the school gymnasium is a hit, but has an unexpected result.
Megan is eager to photograph petroglyphs in a cave that Will has told her about.
While at a party at the wealthy Hoff home, Dee is accused of stealing the Lucerne diamonds, a valuable brooch.
Lassie stalks the culprit who struck and injured her puppy Laddie at one of Chris' construction sites.
The McCulloughs play host to a little girl named Nikki, whose father is looking for a new position in Sacramento.
In the tradition of "Lassie's Day" and "The Sermon" from the original series, Lassie is trying to return a little girl's lost doll.
The family returns from a combination pleasure/business trip to Mexico to discover Carlos Vasquez, son of the craftsman they bought handcrafted tile from, hiding in the back of their car.
The McCulloughs (including Lassie) are hired to portray a typical family in a television commercial.
Will wants desperately to go to baseball camp.
Megan is talked into participating in an unchaperoned party at Tracy's house.
Megan refuses to give up two rabbits which were stolen from a research lab.
Will, returning home with Andrew Leeds and Lassie after a book-signing tour, is being allowed to fly Leeds' airplane.
While shopping for a birthday gift, Dee is taken hostage by a young, injured, and desperate fugitive.
The McCulloughs were at the lake, and Will and Lassie nearby, when Mark Wadner allegedly murdered Susan Jacobs. Now Dee is the lone holdout on the jury, believing they have not proven that the man is guilty.
Will is hoping Lassie will be the dog chosen for the test of a computer system that will help disabled people.