Guest Stars Helen Shingler as Mme. Maigret Victor Lucas as Torrance Ballard Berkeley as Dr. Pardon Michael Golden as Lock-Keeper Bruno Barnabe as Pozzo Trader Faulkner as Lussac Zorenah Osborne as Julie Philip Madoc as Popaul Brenda Cowling as Mme. Pardon Terence de Marney as Colonel Lalinde Patricia Laffan as Christine Pat Pleasance as Annette Duche
