A serial killer is stalking the streets of Paris and Maigret has to resort to setting a trap in order to catch him.
| Actor | Role |
|---|---|
 Sergio CastellittoJules Maigret | Jules Maigret |
 Margherita BuyLouise Maigret | Louise Maigret |
 Carlos BardemJanvier | Janvier |
 Giuseppe SanfeliceLapointe | Lapointe |
 Juli FàbregasLucas | Lucas |
 Paolo De VitaDr. Moeurs | Dr. Moeurs |
 Paolo CalabresiComeliaeu | Comeliaeu |
 Eva SantolariaMaguy | Maguy |
 Renato MarchettiMarcel Moncin | Marcel Moncin |
 Pep CortésProf. Tissot | Prof. Tissot |
 Lluís MarcoLognon | Lognon |