Boardgamegeek https://boardgamegeek.com/boardgame/164265/witness
English - Witness is set in the world of Blake and Mortimer, a Belgian comic series started in the 1940s by writer/artist Edgar P. Jacobs. In the game, which is playable strictly by four players, you each represent one of four characters and your goal is to solve mysteries or crimes by sharing information with one another.
Official http://www.ystari.com/accueil/jeux/jeux-originaux/witness/
French - Meurtres mystérieux, savants fous, codes secrets, incarnez les célèbres personnages d’Edgar P. Jacobs et résolvez ces affaires étranges pour rétablir l’ordre et la justice.
Ludovox http://ludovox.fr/jeu-de-societe/witness/
French - Un “petit” jeu de communication (durée 10 mns) pour 4 joueurs exactement qui vous emmènera dans des histoires policières hautes en couleur !