Mary falls in love with Seth. When Mary's eyesight starts to get worse, Charles takes her to a specialist. He is devastated when the specialist tells him that Mary will lose her sight. Charles is unable to tell Mary for a while that she is going blind. When Mary does go blind, the whole family suffers.
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
.