Guest Stars Raelee Hill as Sikozu Melissa Jaffer as Noranti Sarah Enright as Olivia Crichton Joshua Anderson as Bobby Nick Tate as R. Wilson Munroe Tyler Coppin as Robert Schelmacher Co Starring Nicholas Hammond as Dr. Adrian Walker Michael Barnacoat as Ivan Chanderpaul Leo Christopher as Major Gen. Stephen Walcott Dee Donavan as Dr. Jason Fletcher Uncredited Brian Henson as Dr. Edmund Johnston