Guest Stars Mark Heap as Dr. Moers Lucy Cohu as Madame Maigret Shaun Dingwall as Inspector Janvier Leo Staar as Inspector LaPointe Hugh Simon as Dr. Paul Aidan McArdle as Judge Comeliau Colin Mace as Inspector Lognon Matt Devere as Police Inspector Fiona Shaw as Madame Moncin David Dawson as Marcel Moncin Jack McMullen as Mazet Eva-Jane Willis as Marthe Jusserand Rebecca Night as Yvonne Moncin Katie Lyons as Madame Maguy Leo Hatton as Michelle Gillian Bevan as Madame Tissot Ian Bartholomew as The Baron Beth Cooke as Georgette Lecoin Jack Johns as Rougin Ede Pszotka as Delivery Boy Jessica Bay as Odile Zsófia Rea as Nicole Lecoin Renny Krupinski as Boniek Christopher Bowen as Inspector Lefors Alexander Campbell as Dennis Lecoin Heather Bleasdale as Madame Pardon David Annen as Professor Tissot Martin Turner as Dr. Pardon Rufus Wright as Minister Morel Uncredited Scott Alexander Young as Inspector Nicholas Wittman as Lad