Kader Sherif serves in the Lyon police and has managed to know the city quite well. There’s no getting away from him. He spends almost all his time on duty, for his house is even located in a building adjacent to the police station. Kader Sherif investigates the most perplexing crimes. Over many years of service, he has developed his own methods for unraveling complex cases that do not violate the law, but are rather unusual and cause bewilderment in his new assistant—the eccentric Parisian star Adelina Briar.