Season 1 of Witnesses premiered on March 18, 2015.

Graves have been desecrated and the bodies dug up and left in model homes. Every time the same ritual: a woman, a man, a teenager, all unrelated but they form a new family. Amid the bodies, a photo of Paul Maisonneuve is found, a Crime Squad legend in the North of France who is forced to return to duty. Who is digging up the bodies and why are they leaving them in model homes?

Season 2 of Witnesses premiered on March 15, 2017.

A country road in northern France. A scene that sends chills down the spine: the bodies of 15 men, frozen and lined up inside a bus. The case is assigned to Lieutenant Sandra Winckler, who quickly finds a link between the dead men: all of them were involved at one time another with a woman named Catherine Keemer