Laura holds Dr Baker responsible for her newborn son's sudden, mysterious death. The doctor sees a chance to restore his reputation when little Rose falls ill with smallpox.
Charles discovers a morphine addiction is causing Albert's anger.
Charles decides to bring Albert back to Walnut Grove after police arrest him for theft in Chicago.
Walnut Grove's citizens are delighted over a new railroad, then learn many farmers will lose their land.
Nancy gets angry when her competition, Mrs. Nellie Oleson Dalton, visits Walnut Grove.
Mr. Edwards is determined the carnival owner will not regain custody of the mute boy.
Townspeople rescue a mute boy whom a carnival owner has been using as an attraction.
Mrs. Oleson's prejudice troubles a former circus dwarf (Billy Barty) who is trying to raise his daughter alone.
A deranged man (Robert Loggia) attacks his wife and child, then takes Laura and her daughter hostage.
An elderly farmer (Lew Ayres) urges Almanzo to run for mayor to oppose Mrs. Oleson.
Jenny blames herself for Royal's death Jeb Carter overcomes fear to save Jenny from drowning.
Laura's joy over the imminent birth of her first child is shattered when Almanzo suffers a paralysing stroke.
Hester Sue's estranged husband arrives in Walnut Grove and convinces Charles and Caroline to help him win her back.
An elderly relative of James and Cassandra arrives in Walnut Grove with the news that he plans to sue for their custody.
A modern couple buys a piece of antique furniture, unaware of Charles' pains to create it.
Laura endangers her health and the life of her unborn child when she fights to keep a newly planted fruit orchard alive.
James accompanies his father on a long journey after learning that his new friend Gideon has run away from home.
The entire Ingalls family, trapped inside the house by a sudden snowstorm, spends Christmas Eve reminiscing about past Christmases.
An overworked Hiram Baker and the residents of Walnut Grove are startled when they realise that the doctor's new medical partner is black.
Nancy Oleson causes havoc as she schemes to win the lead in the school festival.