Murderers think they have committed the perfect crime. But the investigators will do everything to find the flaw in the Machiavellian plan devised by each killer.

At the age of 39, Nina finds herself a trainee nurse under the orders of Léo, a 15-year-younger "girl" with a difficult temperament, and Dr. Proust, who likes to scare her ... Not easy ! Especially for all, Nina is the wife of the boss, Costa Antonakis, his ex with whom nothing is really settled despite their divorce. But after healing Lily, their daughter, for ten years, nothing scares Nina! With years spent in hospitals in contact with doctors such as nurses and health-care aides, Nina, the daughter of a great internist and a renowned obstetrician, runs the risk of disappointing them to trace her own path in the hospital universe to which she can not really escape ... Listening and care as a profession of faith, the desire to live and love as a prescription ...

Josephine Delamarre is a guardian angel that Heaven sends to earth. With her psychological insight, ability of persuasion and magical powers, she manages to help people who have problems. She appears at the beginning of each mission; when the mission is completed, she disappears with a click of her fingers.

Fired for insubordination, PJ Antoine Verlay, good cop but a blood strand and having difficulty working as a team, is attached to the OCBC (Central Office for the fight against Traffic in Cultural Goods) thanks to the intervention of the commander Pardo, his friend who becomes, therefore, his new superior. A clever investigator, but a stranger to everything related to culture, Antoine will have to work with Florence Chassagne, renowned art historian, who lives, speaks and breathes culture, to the point that - fruit of her great imagination - it happens to her in the midst of daydreams, to see and talk to the great artists who have disappeared as if they were familiar to her.

Murders in... is a collection of French-Belgian police TV movies taking place each time in a different French city and region.