Hard times come for the Carraclough family and they are forced to sell their dog, Lassie, to the rich Duke of Rudling. Lassie, however, is unwilling to remain apart from young Carraclough son Joe and sets out on a long and dangerous journey to rejoin him.
Roddy McDowall
as Joe Carraclough
Donald Crisp
as Sam Carraclough
May Whitty
as Dally
Edmund Gwenn
as Rowlie Palmer
Nigel Bruce
as Duke of Rudling
Elsa Lanchester
as Mrs. Helen Carraclough
Elizabeth Taylor
as Priscilla
Ben Webster
as Dan'l Fadden
J. Pat O'Malley
as Hynes
Alan Napier
as Jock
Arthur Shields
as Andrew
John Rogers
as Snickers