More than a year after the death of Menard and the bomb explosion suffered by Roman Falco lives in forest, alone, fleeing the violence and the city. He is determined to no longer set foot in the police. But fate decided otherwise. A mysterious serial killer plaguing the capital-acting apparently on behalf of Michel Drouet, a child killer behind bars for twenty years. Falco is the only one to have done speaking in a previous survey. For Pereggi Commissioner, Falco is the only way to stop the killing and to speak Drouet. We must convince him to return. Reluctantly, Falco eventually accepted. Two days. No more. But the clash between Drouet and Falco is just the beginning of a series of events that will end tragically and surprisingly ...

Falco and the team of the DPJ have been manipulated by Michel Drouet who managed to escape. Falco, it is not simply trying to regain his freedom. Old and sick, Drouet has a plan ... and very specific targets. While Falco gives everything to stop this killer and prevent it kills again, he runs into his civilian single condition: it is no longer a cop, and it was he who chose. Between investigation submarine, old grudges and reunion with his friends, Falco will face its past.

Christine Malot is called by the hospital, then announces it new that she hoped not, a suitable donor was found to perform heart transplant for his son. But when remove the organ, the police arrested the operation, the body may have been victim of a killer, an autopsy is needed to determine the exact causes of death of the little boy graft then can be performed. Falco Knight and make it to the hospital to announce the sad news to the mother. This is when it loses foot and takes hostage, a heart surgeon, Falco and Cheron that we can graft the heart of his son. Falco will have to understand the implication of Christine's eldest son in suspicious circumstances of the death of the donor while ensuring that Florian graft is successful despite the recent unfavorable events surgery.

A 17 year old girl was found défenestrée from home for young offenders. The knife wound adorning her abdomen is unequivocal: she was murdered. Falco Knight and discover a neighborhood on the brink of explosion. Two camps clash. On one side the home and its occupants, led by its director. On the other neighbors, guided by the owner of the bar opposite, convinced that all problems come from the corner of the girls. While the first suspicion falls on the home and the past of ex-offenders, the investigation quickly focuses on a personal vendetta ... related to the accidental death of a young man in the neighborhood, a month earlier. The problem for the two officers will then discover the truth without triggering a riot that may end in lynching.

A sixty year old woman is brutally attacked and left almost dead in the street in broad daylight. His fingers were broken to make him confess something ... but she refuses to say what. It's just something binds to a murder that took place a week earlier in similar circumstances. Grenier, an obstetrician who worked with inmates was also tortured. The puzzle is completed as and as Falco and his crew discover the key elements. A women's prison. Birth under X. detained victims of lies ... and a killer in search of a child that her mother would have never wanted to give up.

The BRI acts in force in the flag of a collector victim of a burglary. Fire. Prosecution. The robbers abandon one of them murdered. The DPJ is on the case but Vallès old competitor Commissioner Pereggi, opposes their investigation. Falco and Romain have a choice: to investigate under the cloak ... Falco method that pushes through. Putting his superiors with a fait accompli, he infiltrates the gang of robbers, replacing at short notice slaughtered the victim. But the robbers, welded, believe incorrectly that their friend was killed by the BRI. One of them is lying, but which one? It will go through a museum robbery to find out.

A headless skeleton was found in a Paris wasteland. Early indications point to a never resolved disappearance, that of Yazel Brahni, eight years earlier. The main suspect was her former lover and art teacher, Ludovic Perroa never charged. Falco revived the investigation with these new elements, offering hope to understand what happened to the husband and the daughter of the disappeared. Only the setting that seemed to just stick with the provocative personality of the artist proves that he has nothing to do with it. It's not even good corpse. Falco and Knight are exceeded, especially as Falco finally traced to Ponthieux. This is the only track on the cop to understand why Ménard was forced to shoot him.

Eleanor, that Falco was sheltering some time back in his life. She is determined to understand who handled their past and why. Falco just can not both investigate and protect. The choice of Eleanor will then put them both in danger. Meanwhile, a police officer nearing retirement was abducted and her abductor promises to judge him. A race against time begins. Falco and Romain discover that the person who holds the cop called Louis. He has 20 years and militates against the police for years, via the Internet, disclosing its burrs. If it has turned a corner in violence is that her best friend, Manon, was herself a victim of police violence ... but the culprits have been tried, aggrieved by justice, she commits suicide. Falco Knight and therefore will try to stop a man determined to take the law itself. Only the young man ignores actually the truth more complicated than that.

A corpse was found asphyxiated in dichloromethane in an old trailer. If his identity is unknown, he left a message: an early name "Lor". Falco and his team then put the finger in a health scandal stifled by the company responsible, Orfleur. Two paths open. A victim of the scandal that wants revenge ... or conversely CEO Orfleur who would silence those who might do dive. In the center of the vortex, Leah Butler, the No. 2 Orfleur oscillating between all shut up and swing ... While his family life is weighed down by his inability to communicate with her husband. Falco he will come to save multiple opponents who dream dead?

Pauline disappeared. Falco is convinced that she was abducted by Darrigade, the man who, for 25 years, made his life and that of fire Ménard hell. But Falco refuses help he would need to find her daughter ... and doubt gradually settles into the head of his friends. And if he was delirious? If everything were only a consequence of his coma? Falco is isolated and eventually interned in psychiatric hospital to finally prove that he is victim of a plot. His friends finally at his side, they investigate together to find Pauline. But before saving it will outmanoeuvre Darrigade and face one last time on his land, that of manipulation and false pretenses.