Guest Stars Mel Harris as Dr. Christina Markham Geraint Wyn Davies as Sheriff Grady Markham Sebastian Spence as Young Gerry Timothy Webber as Dep. Middleton April Telek as Young Lucy Corrie Clark as Young Sylvia Harold Gould as Gerry Betty Linde as Sylvia Heather Hanson as Young Helen Maxine Miller as Helen Co Starring David Lewis as Deputy A.J. Unger as Peter Maria Louisa Figura as Virginia Masters Lindsay Bourne as Administrator Walter Marsh as Dr. O'Keefe Crystal Cass as Alien
