Jack Lilley

Laura’s beloved horse Bunny has officially been returned to her. She eagerly prepares to enter a local race. Jealous, Nellie throws a tantrum until Harriet agrees to buy her a thoroughbred without Nels' approval. Although Nellie and her horse are expected to win the race, Laura perseveres with her training. The stakes are higher than ever when Harriet donates a lavish prize for the winner.

On Halloween night, Laura and Mary get permission from their parents to walk into town and pull off a little prank at the mercantile. Laura's imagination runs wild when she peeks into the Olesons' window and witnesses Nels committing an unspeakable crime. Scarred by what she has seen, Laura can't seem to get anyone to believe her.

When Percival's parents Benjamin and Edna arrive for a visit, Harriet and Benjamin clash miserably over their grandchild's religious upbringing. Nellie's joyous pregnancy is tainted by the strenuous fighting, but the families eventually reach an unusual agreement.

As his heart swells with hope for a law career, Adam heads to Minneapolis for the big exam, but nothing seems to go his way once he arrives there. Is achieving this dream proving to be more than he could handle after all? Back in Walnut Grove, Harriet is struggling with her diet, and Nels believes that a visit from her thin, beautiful cousin Miriam will motivate her to stick with it.

While Almanzo is eager to start a family with Laura, she is not ready to give up her teaching career just yet. Determined to help Laura change her mind, Almanzo offers to care for his brother Royal's two young sons while he and his wife are on vacation, which proves to be an unfortunate mistake.