William Osler

~ as ~

Mu Lambda 165 (aka: Host Computer) and 1 more

Keir Dullea

~ as ~

Devon

Robin Ward

~ as ~

Garth

Gay Rowan

~ as ~

Rachel

Walter Koenig

~ as ~

Oro

Ed Ames

~ as ~

Mr. Smith

Sterling Hayden

~ as ~

Old Jeremiah

George Sperdakos

~ as ~

Jubal

Gillie Fenwick

~ as ~

Old Abraham

Sean Sullivan

~ as ~

Rachel's Father