Guest Stars Carrie Aizley as Kitty Chadwick Ed Begley Jr. as Al Chadwick Lisa Palfrey as Luba Chadwick Ashley Walters as Dr. Watson Elliott Jordan as P.C. Garry Dawson Gerard Horan as Sgt. Ray Biggins Jake Harders as Sherlock Holmes Sophie Abelson as W.P.C. Sharon Bullivant Adam James as Ronnie Chadwick Susan Earl as Emma Chadwick Christian Rodska as Graham Chadwick Spencer Jones as Personnel Officer