Rzeczne potwory Sezon 4 Odcinek 6: Russian Killer

The disappearance of three men in Russia proves to be a baffling case for Jeremy Wade. He embarks on a trip to the Amur River where he seeks to uncover what happened to them. The prime suspect is a predator that can weigh up to a ton and exceed eighteen feet in length. But when Jeremy tries to find out more about this monster fish he comes up against a wall of silence. Has he stumbled upon some kind of dark secret?