About
Xavier Marton asks Maigret for help against his wife who he thinks is going to posion him. On the other hand, his wife Gisèle also comes to Maigret to tell him about his husband having delusions.
Marton is allured by Gisèle’s sister, Jenny, but Jenny is the lover of M. Harris. Next day Marton is found dead, poisoned and the three suspects make it a dubious affair for Inspector Maigret.