Jeremy Wade is on the trail of a mysterious man-eater described over 200 years ago by a famous explorer. Is the 8-ft beast in question a mere legend, or could it be the same, flesh & blood creature that has attacked divers & children?

Jeremy Wade travels to the Paraná River in the remote corner of Argentina to investigate the death of a young girl. This creature is not armed with bone-crunching jaws or razor sharp teeth, but a razor-sharp blade tipped with tissue-destroying venom.

Jeremy Wade heads to the Australian outback to try & catch the fearsome Freshwater Sawfish. This shadowy predator is said to be 18-feet long & attacks boats. But does the fact that it could slash Jeremy to shreds make it a killer?

Jeremy Wade travels to Brazil's "wild west" in search of a river monster that has killed three cowboys. The search for the culprit sends him deep into prospecting cattle country, where he discovers the shocking truth about a fish he's never caught before. He has to combat all his fears to catch this monster, and after a long chase, Jeremy finally corners his elusive prey in the most unexpected place. All he has to do then is catch it without getting killed.

Having never been to Japan, Jeremy Wade is entering new territory in more ways than one. The river monsters there are like no others he ever has encountered, from the devastating "Namazu," which legend says causes earthquakes, to a child-snatching killer called the "Kappa." Can our extreme fisherman uncover the truth behind these legends? Can he catch a monster in the rivers of Japan that reveals the reality behind these horrific tales? He is about to find out.

Jeremy Wade sets out to discover the true river monster of South America. Piranhas get all the press, but is there a more fearsome predator lurking in its rivers? Tipped off by an account of an attack on a diver, Jeremy soon discovers that there is a real monster to find. Tipped off by the the local Amerindian tribe, Jeremy heads deeper and deeper into the remote jungles of Suriname to come face to face with a jungle killer like no other.