Extreme angler Jeremy Wade heads to Russia's remote Amur River, where the mysterious deaths of three men appear to be linked with a reclusive freshwater giant. The prime suspect is a predator that can top a ton and exceed eighteen feet in length.

Jeremy Wade returns to Australia's predator-packed Fitzroy River in search of one of the world's rarest and least known fish - the Northern River Shark. It's so elusive that only twenty have ever been caught.