When a favorite patient dies, Mary Ellen decides to become a doctor. Meanwhile, the Waltons plan birthday gifts for Jason in France.

A privileged young man discovers that he's in love with his horse trainer's daughter, and though he's promised to another woman, the two lovers elope.

A dog tries to lead Jonathan and Mark to his owners, a father and son trapped in a wrecked car.

The bionic dog is kidnapped by foreign agents while Jaime lies helpless in a hospital bed.

An arrogant football player decides to have a fling. But when he gets rough with the girl, she tries to leave. They get into a scuffle that ends with her dead.

Drysdale and Jane arrive in New York to persuade the Clampetts to return home.

Barnaby investigates why a lawyer for a powerful family corporation is killed soon after he tells him he no longer needs him to find out who is threatening him. He learns it may be related to a missing girls involvement in a religious cult.

J.R. infiltrates a religious cult to help Barnaby get to the bottom of why a lawyer for a family run corporation was murdered, and why the identity of a young woman that is a member there is being kept so secret.