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