Lassie's original owner returns to claim her.
Lassie finds leg-hold traps set by poachers.
A zealous dog catcher impounds Lassie.
Timmy and Geoff go into the egg business, with disastrous results.
A dog eats a student's homework.
Timmy and Natalie must choose between keeping a promise and helping a friend.
No one believes Timmy when he sees a wolf on April Fools' Day.
When Lassie discovers an oil spill, Timmy believes Hank is a polluter.
Timmy and his friends publish a controversial newspaper.
Timmy and Geoff witness a robbery while playing hooky.
Timmy and his friends think Buddy may have rabies.
Timmy and Lassie befriend a talented street musician.
Local hustlers convince Timmy and his friends to issue a permit that the city council has already refused.
Lassie falls ill; Timmy rehearses for a talent show.
Lassie takes part in a therapy program.
An innocent man escapes from police custody.
Hank and Geoff ride in an airplane; Timmy and Lassie escape from a moving train; Natalie is rescued from the water.
A famous actor brings his pet monkey to town.
Timmy sends a chain letter.
Ethan can't control his adopted greyhound.
Timmy tells a scary tale during a camping trip.
Lassie searches for a robber.
Chaos erupts when Timmy is left in charge of the clinic.
Timmy disobeys his parents.
Lassie must solve the mystery of UFO sightings over Hudson Falls.
Lassie is falsely accused of terrorizing a farmer's livestock.
Lassie and Mel must fend for themselves while trying to get home.
Lassie tries to save Timmy, trapped in an abandoned mineshaft.
Timmy and Lassie get trapped inside an abandoned mine.
Lassie digs up an American Indian artifact from a burial ground.
Timmy directs the school play.
Timmy and Natalie are teased when they team up for a science project.
Timmy mourns his father when the Booster Association has a father-son night.
Uncle Roy is wrongly accused of poisoning the town's dogs.
Timmy gets food poisoning, which postpones Karen's speech.
Timmy must deal with the school bully.
Mel steals sneakers to get attention.
Lassie saves a litter of unwanted kittens from drowning; Timmy and Doc learn to let go of emotional attachments.
The children complete a school project.
Lassie and Timmy try to end the feud between Geoff's father and Ethan.
A hunter leaves a fawn motherless; Doc teaches Timmy proper hunting safety.
Geoff and Timmy try to sell a stash of smuggled Cuban cigars.
Hank saves Lassie from a con artist.
Timmy thinks that everyone forgot his birthday; a famous ballplayer visits.
Lassie and Timmy save a young boy stuck on the edge of a cliff.
Lassie helps to restore the shattered faith of a horse healer.
Timmy and Geoff become stranded on a runaway raft.
Lassie tries to warn Timmy and Billie that an alligator is loose in the swamp.
Lassie and Timmy help when Hank gets pinned under a pile of rubble.
Lassie is injured while trying to escape from her neglectful owner.