Guest Stars Richard Durden as Letwin Guy Henry as John Bishop Amanda Root as Elizabeth Lewes Henry Goodman as Howard Paige Bryan Dick as Kenneth Hunter Janine Duvitski as Eve Redmond Tim Treloar as Bob Fraser Rebecca Johnson as Jenny Wentworth Steven O'Donnell as Henry Jamieson Sam Redford as Tom Fairweather Paul Foster as Colin Morton Kathryn Pogson as Valery Hunter Clive Merrison as Dr Redmond John Rowe as Commander Simmons Nicholas Le Prevost as Arthur Lewes Geoffrey Chater as Professor Phillips Jack Chissick as Jack Dunning Marlene Sidaway as Mrs Harrison Tom Georgeson as Richard Hunter Jonathan Coy as Hans Meier