Charles and Caroline sign Mary up for the blind school in Iowa. At first, Mary is very reluctant to learn anything at the school. However, after being with her teacher, Adam Kendall, for a while, she turns her outlook on life around. Mary is such a great student that Adam asks her to help her teach at a blind school with him.
Elenco: Melissa Gilbert , Michael Landon , Lindsay Greenbush , Sidney Greenbush , Melissa Sue Anderson , Richard Bull , Jonathan Gilbert , Kevin Hagen , Matthew Laborteaux , Dean Butler , Dabbs Greer , Karen Grassle , Katherine MacGregor , Ruth Foster .