The Tunnel Vengeance Episode 3 Episode 3 ( Air Date 2017-12-28 ) Genre Action & Adventure, Crime, Drama, Mystery category. Overview "The investigation steps up when Winnie is sent a live rat in a box, with a set of co-ordinates leading to the Pied Piper’s latest victim. Meanwhile, Karl’s disapproval turns to concern when he learns the extent of Elise’s distress over the Moreau case. In English and French".