Phantom Assassin

S4, E7: Extreme angler Jeremy Wade returns to Australia's Fitzroy River on his toughest quest yet - to catch one of the world's rarest fish, the Glyphis Shark. It is so elusive that it was only discovered ten years ago, so rare that only a handful have ever been seen, and so mysterious that nearly nothing is known about it. Could it also prey on humans? As he braves killer crocodiles, poisonous fish and deadly tides, will Jeremy be one of the first people ever to catch a Glyphis?