Robert Casper

Mr. Montague, a renowned author who is undergoing research for his next book, moves in with Laura and Almanzo at their newly implemented boarding house. He proves to be quite an interesting and unexpected addition to the Walnut Grove community. Meanwhile, Mr. Edwards faces a moral dilemma when Philip Rogers - the biological father of his recently adopted son Matthew - shows up to reclaim the boy.

Progress on a priority moon project is temporarily interrupted when its administrative head is murdered.

Esmeralda decides to right a wrong she committed hundreds of years ago, and she straightens the Leaning Tower of Pisa.

Mary is admitted into the hospital for a tonsillectomy and ends up with a grouchy roommate who could make anyone sick.

Mary is devastated when Rhoda returns from a vacation in New York and announces she’s accepted a job and will be leaving Minneapolis for the Big Apple.

A blind-date-initiated, 12-hour romance culminates in Carol Kester's civil marriage to a handsome travel agent (Will Mackenzie).