Guest Stars Simon Hubbard as PC Taylor Don Gallagher as Dr. Bob Anderton James Norton as James Blackstone Nick Hendrix as Anthony Baugh Christopher Fairbank as Billy Mallam Geraldine Somerville as Alethea Blackstone Nicholas Lumley as Dr. Arnold Roger Lloyd Pack as Hector Blackstone Fred Pearson as Caretaker Ebony Buckle as Ellen Mallam Alex Childs as Ms. Acklington Chris Brailsford as Asst. Chief Constable Gordon Bev Fox as Woman