Season 1 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. Details Casts Galleries Posters Season Lists Episode Lists Title Season 1 Genres Crime Drama Air Date 2017-12-19 Episode Runtime 00 Hours 52 Minutes Season Number 1 Episode Count On Season 1 6 Production Companies GMT Productions, Elephant Story, France Télévisions Franck Adrien... Philippe... Laurent Fernandez... Micha... Arthur Mazet... Thibaud... Isabelle Gélinas... Capitaine Agnès Bertaud... Thomas Walch... Max... Antoine Duléry... Commandant Renaud Delauna... Maxime Flourac... médecin légiste... Elisa Ruschke... Laura Mizon... Déborah Krey... Laurence Prigent... Original Size (1280x720) Original Size (1280x720) Original Size (3840x2160) Original Size (3840x2160) Original Size (667x1000) Original Size (1000x1500) Original Size (960x1440) Season 1 6 Episode(s) 2017-12-19 Season 2 14 Episode(s) 2018-10-16 Season 3 12 Episode(s) 2020-11-24 Season 4 3 Episode(s) 2021-02-16 Episode 1 2017-12-19 Episode 1... Episode 2 2017-12-19 Episode 2... Episode 3 2018-01-30 Episode 3... Episode 4 2018-01-30 Episode 4... Episode 5 2018-02-28 Episode 5... Episode 6 2018-02-28 Episode 6...