Linda Hamilton
— Mattie MacGregor
Joseph Bottoms
— Dr. Alex MacGregor
John Reilly
— Sam
Margarita Farrell
— Wishman
Robin Gammell
— Dr. Harold Wish
Mark Dodson
— Wishman (voice)
James Keach
— Galen Reed
Jason Presson
— Bruce Kaleb
Jean Bruce Scott
— Karen Kaleb
Sam Weisman
— Nat Kaleb
Marii Mak
— Doctor
Seamon Glass
— Gate Guard