Guest Stars Jack Bannon as Sam Thursday Stefanie Martini as Georgina Mortmaigne Hermione Corfield as Cassie Watkins David Burnett as Ricky Parker Hugh Simon as Professor Kemp Darrell D'Silva as Geoff Craven Peter Forbes as Hodges Ben Lambert as Guy Mortmaigne John Draycott as Turnbull Milo Twomey as Dr Hector Lorenz Amy McCallum as Julia Mortmaigne Eleanor Williams as Ingrid Hjort Rob Callender as Philip Hathaway Sam Coulson as Mark Bryden
