Characters played by Wil Wheaton
Zack
Characters played by Claude Akins
Nathan
Characters played by Malcolm Danare
Cyrus
Characters played by Cooper Huckabee
Forbes
Characters played by John Schneider
Willis
Characters played by Amy Wheaton
Alice
Characters played by Steve Carlisle
Davidson
Characters played by Kathleen Jordon Gregory
Frances
Characters played by Hope North
Esther
Characters played by Steve Davis
Mike
Characters played by Angelo Casadei
Arthur
Alan's patient