Environmental extremist movement veteran Alban’s corpse is found in the forest, skull smashed, teeth and fingers mutilated, yet buried with respect. Matthieu’s team works out he probably wasn’t the victim, nor the target, but his twin brother Victor, a divorced banker who recently stepped out of the rat race. Chloé lets her sister commandeer her last minute to babysit son Elliott, but he gets lost a while in the park, to father Adrien’s fury at the ‘crazy cow’, but it’s no accident. The murder case proves twisted in many senses.