City in Darkness

A calm, brilliant detective whose arrival in Paris sparks the investigation. He pieces together disparate clues with logical precision and navigates the complex web of suspects. His presence balances Inspector Spivak's nerves, guiding the case toward a clear solution. He ultimately reveals the killer and exposes the underlying arms-dealing plot tied to Nazi Germany.

The prefect's bumbling inspector left in charge in the chief's absence, he is apprehensive about handling a high-profile murder. He relies on Chan's expertise and struggles with confidence, providing a human counterpoint to Chan's certainty. His collaboration with Chan is essential to advancing the investigation. By the end, he plays a key role in the pursuit of the truth and the arrest.

A wealthy arms dealer whose murder triggers the investigation. His illicit activities—selling arms to Nazi Germany—are central to the case and its political implications. His death exposes a broader network of crime and geopolitics threaded through Paris.

A spy who is spotted fleeing Petroff's residence, entangled with Marie Dubon and the case's secrets. Her actions contribute to the atmosphere of intrigue and misdirection that Chan must navigate. She represents the perilous blend of espionage and crime in pre-war Paris.

A local woman connected to her husband Tony Madero, involved in attempts to clear his name amid scandal. Her presence ties personal relationships to the broader investigation, complicating motives and alibis. She provides critical links between domestic concerns and the crime's geopolitical stakes.

A counterfeiter who nearly clashes with Chan during a tense confrontation. His role as a burglary accomplice highlights the intersection of white-collar crime and the Petroff case. He serves as a pivotal link in the chain of clues that Chan follows.

Petroff's business partner who becomes a target in the investigation and is connected to the broader plot. His involvement adds another layer to the crime network Chan is unraveling. His fate underscores the dangers present in the case.

A French patriot who murders Petroff after discovering the arms deals. His actions reflect the era's political passion and moral resolve. He faces trial with possible recognition for his stance, illustrating the tug-of-war between law, justice, and patriotism.