Police Commander Louise Chaland is investigating the murder of a controversial sculptor with the help of her son Sylvain, who has become a priest. The body was discovered alongside one of his works, which has been daubed with Latin inscriptions. They soon establish a link with the disappearance of a relic of Saint Martin, the patron saint of the city of Tours. Their investigation leads them to a shelter for the needy, run by François Delcourt and his daughter, who was in love with the murdered artist. Clues start to reveal the disturbing fascination some inhabitants of Tours have with the missing relic. Louise and Sylvain will discover the rich historical and religious heritage of the city as the secular mother and pious son come to some sort of a reconciliation.

After his wife allegedly commits suicide, Vincent starts behaving very strangely, throwing away the weapon and moving the body, leading the police to start asking questions.

A body is found in a boat adrift somewhere between Fort Boyard and Aix Island. Solène Brach from the mainland police is sent to investigate.

When recently widowed, it is difficult to get used to a new life ... This is the case for Hubert Jacquin, who spends most of his time in his huge apartment, depressed, in front of his TV. One day, after a misunderstanding, his life will change. Manuela, a young and bubbly adventurer in search of a dwelling calls his home! At first reluctant, Hubert will quickly get used to the presence of this energy storm, who even manages to convince him to allow two other people to stay. There are many surprises in store for Hubert ...

May 1944, a group of French servicewomen and resistance fighters are enlisted into the British Special Operations Executive commando group under the command of Louise Desfontaines and her brother Pierre. Their mission, to rescue a British army geologist caught reconnoitering the beaches at Normandy.