Episode list

Alice Nevers wakes up terrified in the middle of emergency surgery after being stabbed in the abdomen by a scalpel. When she recovers in the ICU, she asks doctors to prevent Commander Marquand's visits. Fifteen days later, Victor Lemonnier sees Camille Verdier, an expert court psychiatrist, who was investigating the case of the accused Dumont murder, fall from the top of a staircase in the Salle des Pas Perdus in the Palais de Justice. The coroner confirms death by poisoning. Marquand and the judge meet again after her intervention, since she has avoided contact with Fred.

A group of cheerleaders rehearse in the gym of a sports centre, but Manon, the leader, 16, does not keep up and the coach, who is also her father, rebukes her. In a somersault she hurts her ankle. Jules Rizzoli suspects she is distracted because of a boyfriend. Manon dodges him into a hidden room in the facilities basement, where she takes off her dead mother's baptismal medal. Later, a stranger moves her body in a platform trolley and the corpse is found on the tennis court, with a blow to the back of the skull. Mr. Rizzoli declares that a snooper had been spying on his daughter for weeks.

During an endurance race organized by the company where he works as an intern, 24-year-old Antoine Perrin suffers a sudden epileptic seizure and dies. The coroner confirms death was caused by a stimulant. Marquand and Alice are suspicious of all interns, who are struggling to get the only permanent position in the company; the race being a part of the trials they are put through, along with the endless working hours, the sleepless nights, and the pills to put up with it. Alice is also increasingly turning to morphine to withstand the aftermath of her surgery.

In the hospital room where Martin Leguennec, in a coma for three years due to a car accident, stays, his father, Pierre, 56, a speech therapist, treats him as he were conscious. A stranger in clown disguise, approaches Martin and records themselves on his mobile. "The time has come. Ready?", he says, and stops the respirator. Pierre fights with the clown, who flees, and tries to reconnect the device. The hospital security hunts down the clown and makes sure the recording shall not be released. Back in the room, Pierre Leguennec is dead on the floor from a blow to the head and his daughter-in-law Julia at his side asking for help. The family was divided between keeping Martin alive or giving him a dignified death.

Jenny Peyrac, an English teacher, is found murdered in a cement factory with her skull smashed by a jack. She had been involved in a robbery when she was eighteen and was wearing an electronic surveillance device on her ankle. Marquand and Noah must find out how she dodged surveillance to be out of home at night and if her past had been discovered and someone wanted her to pay for it. During the investigation Alice undergoes hypnosis sessions to understand the visions of her childhood she is being tormented with.

Carl Mattéï is found dead, suffocated with a plastic bag, in the basement of the hotel where he works. Investigators are surprised to find out that for 25 years he lived as Béatrice and worked at Pixel, an advertising agency. For some reason she quit her job, stopped her desired process of becoming a woman and hide from everyone, including his father. In the meantime, Alice continues with her immersion in a past that haunts her, but her father refuses to answer the questions she asks about her childhood.

During his morning workout on the banks of the Seine, Noah notices the body of Cécile Portal. The coroner discovers that she is still alive and she is taken to hospital for further exploration as she may have suffered sexual assault, but she escapes terrified when the coroner begins the procedure. Later, during a D-Day reenactment that he participates in every year, her boyfriend, David Millot, is found dead hanging from a parachute rope. Cécile, missing, could be the murderer. Throughout the investigations, Dr. Chahine disappears, which causes the judge's unease.

A group of strangers posing as a police squad break into François García's, a renowned forty-year-old antiquarian, and shoot him in the head in front of his teen daughter. At first, it seems that it was a burglary that went wrong. Nina,16, informs investigators they have been living away from their gipsy origins for years, which lead them to also consider revenge as the motive . During the investigation, Alice decides to look for her childhood home with Marquand, for she fears that the murder of a man in which she was involved was committed there.

It is the dead of the night in Paris and a man chases a horse through the deserted streets in his van. When he is about to catch it, he is shot down and falls dead on the sidewalk. The coroner confirms the cause of death a hypodermic dart with a dose of tranquilizers intended for a large animal. Investigators discover Hervé Carpentier owned a stable where injured horses recover and one of them, Othello, has disappeared. Othello belonged to a pharmaceutical laboratory, in the research of new vaccines, but ended up inexplicably in the possession of Cissy, Carpentier's daughter. In the course of the case, Alice asks her father for details about the stranger found in her childhood home.

Apparently a couple is having a romantic dinner, but in fact the woman is tied to the chair and the man rebukes her for cheating on him. Hours later, her body is found strangled inside a sand barge. Alice and Marquand discover that the victim was Florence Rafin, 40, a medical secretary, mother, and a follower of "Chut!", an extramarital dating app. Two similar unsolved murders in France lead investigators to think of a serial killer. During the case, Lieutenant Diacouné is having a hard time, but prefers not to share his problems with his boss, which leaves Marquand worried.