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