William Shatner

John Gossner

Dan Gauthier

Andy

Amy Acker

Kate

Tom Towles

Dietz

Dick Van Patten

Irv Barnett

John Prosky

Hester Dealt

Duane Whitaker

Dr. Stevens

Brenda Bakke

Joyce

Debra Mayer

Clinic Nurse

Chuck Williams

The Alien

Ariauna Albright

Woman from Town (uncredited)

William Shatner