Guest Stars Mark Heap as Dr. Moers Leo Staar as Inspector LaPointe Lucy Cohu as Madame Maigret Shaun Dingwall as Inspector Janvier Hugh Simon as Dr. Paul Colin Mace as Inspector Lognon Lorraine Ashbourne as Rosa Alfonsi Adrian Scarborough as Dr. Bloch Jane Wood as Mme. Aubin Douglas Hodge as Fred Alfonsi Cassie Clare as Tania Olivia Vinall as Arlette Nicola Sloane as The Countess Adrian Rawlins as Oscar Bonvoisin Tilly Vosburgh as Nathalie Sebastian De Souza as Philippe Martinot Simon Gregor as Grasshopper Gyula Mesterházy as Man at Pissoir Niké Kurta as Betty Sara Kestelman as Madame Dussardier Alexandra Bakonyi as Genvieve