Timothy Hutton as Thad Beaumont / George Stark

Amy Madigan as Liz Beaumont

Michael Rooker as Sheriff Alan Pangborn

Julie Harris as Reggie DeLesseps

Robert Joy as Fred Clawson

Kent Broadhurst as Mike Donaldson

Beth Grant as Shayla Beaumont

Rutanya Alda as Miriam Cowley

Tom Mardirosian as Rick Cowley

Larry John Meyers as Dr. Pritchard

Patrick Brannan as Young Thad Beaumont

Royal Dano as Digger Holt

Glenn Colerider as Homer Gamache

Chelsea Field as Annie Pangborn

Christine Forrest as Trudy Wiggins

Jeff Monahan as Wes

Jeff Howell as Dave

Rik Billock as Donaldson Cop #2

David Early as Officer #2

Sarah Parker as Wendy Beaumont / William Beaumont

Elizabeth Parker as Wendy Beaumont / William Beaumont

William Cameron as Officer Hamilton

Rohn Thomas as Dr. Albertson

Molly Renfroe as Hilary

Judy Grafe as Head Nurse

Donna Lynne Champlin as Babysitter (uncredited)

George A. Romero as Customer (uncredited)

John Amplas as Thad Beaumont (double)