A student is stabbed to death in the street. As Maigret and Cavre disagree over the killer's motives, Maigret digs into the killer's psychology and tries to provoke him into making contact. But a sudden call leaves him facing an impossible decision.

Chief Inspector Maigret and his team of maverick but loyal detectives, “Les Maigrets,” solve a series of complex crimes in Paris. Maigret’s unconventional methods and unique sense of justice put him at odds with his superiors and the judicial system he is supposed to represent. Maigret must outwit some of Paris’s most cunning and violent criminals, while dealing with his own troubled past.