River Monsters - Season 3 - Eps 5: Electric Executioner
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.
About River Monsters

Title: River Monsters
First Air Date: 2009-04-05
Last Air Date: 2017-05-28
Status: Ended
Rating: 7.2/10 (from 53 votes)
Language: EN
Seasons: 10
Total Episodes: 59
Network: Animal Planet
Genres: Documentary, Action & Adventure, Reality
Production Companies: Discovery Productions, Icon Films
Synopsis
Extreme angler Jeremy Wade is on the hunt for fish with a taste for human flesh. This rip-roaring ride mixes action and adventure with mysteries, edge-of-the-seat chase and a battle of wills between man and nature.
Cast

Jeremy Wade
Himself