The BEST Episodes of River Monsters

Every episode ever - ranked by fan votes!

Last Updated: May 26, 2020

Network: Animal Planet

Extreme angler, Jeremy Wade, is on the hunt for freshwater fish with a taste for human flesh. This rip-roaring ride through the dark side of nature mixes action and adventure with mysteries, edge of the seat chase and a battle of wills between man and almost supernatural beasts who lurk in the serpentine waterways of the planet, mooching murderously underwater, growing to truly awesome sizes. Watch as Jeremy Wade deconstructs exactly how these river monsters are constructed to kill.

Invisible Executioner

#1 - Invisible Executioner

Season 4 - Episode 3 - Aired Apr 15, 2012

It's common knowledge that crocodiles and hippos are deadly predators in Zambian waterways, but it seems there's another monstrous beast stalking the treacherous Zambezi River. The locals call this river monster "the Mazunda" but Jeremy Wade is unfamiliar with any fish by that name. Will he uncover what the sinister creature — said to be able to swallow a child — really is?

star 8.36
159 votes
River of Blood

#2 - River of Blood

Season 6 - Episode 3 - Aired Apr 20, 2014

A brutal underwater mutilation of a young man leads Wade to a face-to-face confrontation with one of South America’s greatest freshwater fighting fish that slashes and stalks its prey while living in one of Argentina’s most dangerous waterways.

star 8.11
94 votes
Man-Eating Monster

#3 - Man-Eating Monster

Season 6 - Episode 4 - Aired May 4, 2014

All over the Amazon, Jeremy Wade has heard stories of a monster fish that grows so large, it’s said to swallow men whole. Locals call it the lau-lau but after 20 years of searching, from Peru to Brazil and Colombia, the evidence Jeremy needs - a single colossal specimen - stills eludes him. Now though, he’s discovered a secret, untouched location deep in Guyana’s remote rainforests where he suspects they may be thriving. Embedding himself in the wild jungle, this time it’s different: he’s not coming back until he catches it.

star 8.07
76 votes
Pack of Teeth

#4 - Pack of Teeth

Season 4 - Episode 2 - Aired Apr 8, 2012

In Southern Africa there are rumors of a terrifying river monster lurking in the eerie waters of the Okavango Delta. Witnesses say the fish have shark-like teeth and hunt in frenzied packs on schools of fish — and maybe even on human bodies. It sounds mysteriously like the work of giant piranhas, but there's nothing like that here. Or is there? Jeremy Wade sets out to uncover the truth.

star 8.04
162 votes
Killer Torpedo

#5 - Killer Torpedo

Season 5 - Episode 2 - Aired Apr 21, 2013

Angler Jeremy Wade ventures deep into the heart of Central America in search of a man-sized killer said to leap into boats and cause fatal injuries as it knocks fishermen unconscious and smashes their bones.

star 8.03
106 votes
Vampires of the Deep

#6 - Vampires of the Deep

Season 5 - Episode 4 - Aired May 12, 2013

On the Canadian-U.S. border lies a vast and brooding lake that hides a dark history. For Native Americans, it’s an ancient and sacred site home to underwater spirits. But recently, something has risen from the murky depths to attack swimmers and stories abound of a nightmarish invasion of primordial bloodsuckers. In a journey that will take him to the heart of a thundering waterfall in the Pacific Northwest, extreme angler Jeremy Wade embarks on a punishing mission to battle the most ancient river monster he’s ever encountered, and reveal the true identity of the Vampires of the Deep.

star 8.03
77 votes
American Killers

#7 - American Killers

Season 4 - Episode 1 - Aired Apr 1, 2012

In the suspense-filled two-hour premiere, Jeremy Wade treks across the United States in search of deadly river monsters living in the nation's waterways. Wade ventures from the popular Indian River Lagoon in Florida where unsuspecting water enthusiasts are faced with what could become a modern day Jaws, to the Lake of the Ozarks in Missouri, where underwater hunters have reached man-eating proportions.

star 8.01
153 votes
Cold-Blooded Horror

#8 - Cold-Blooded Horror

Season 3 - Episode 6 - Aired May 22, 2011

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.

star 8.00
216 votes
Devil of the Deep

#9 - Devil of the Deep

Season 8 - Episode 6 - Aired May 26, 2016

Extreme angler Jeremy Wade's cases usually involve freshwater culprits, but with multiple reports of a deep water serial killer in Mexico's Sea of Cortez, he must step out of his comfort zone and into uncharted depths in search of the red devil.

star 8.00
7 votes
The Mutilator

#10 - The Mutilator

Season 3 - Episode 1 - Aired Apr 10, 2011

Jeremy Wade travels to Papua New Guinea to investigate a spate of bizarre deaths on one of the world's last great unexplored rivers, the Sepik. A creature there is tearing chunks from unsuspecting fishermen and devouring certain male body parts. Jeremy has never fished in this part of the world and knows little of what might be there. Nothing could prepare him for what he discovers.

star 7.94
258 votes
Chainsaw Predator

#11 - Chainsaw Predator

Season 3 - Episode 4 - Aired May 1, 2011

Jeremy Wade heads to a remote river in the Australian Outback to try and catch the rare but fearsome freshwater sawfish. This shadowy predator is reputed to reach 18 feet long and attacks boats — but does the fact that it could slash Jeremy to shreds make it a killer? And why is this bizarre-looking sea monster swimming hundreds of miles inland?

star 7.93
179 votes
Amazon Apocalypse

#12 - Amazon Apocalypse

Season 6 - Episode 1 - Aired Apr 6, 2014

Looks back at one of the Amazon’s largest maritime disasters, the sinking of the Sobra Santos. Witnesses and surviving passengers retell the story of the event, in which as many as 200 passengers lost their lives. Something in the water is being blamed for many of the deaths, and Jeremy Wade wants to find out what that might have been

star 7.88
144 votes
Killers from the Abyss Super-sized Q&A

#13 - Killers from the Abyss Super-sized Q&A

Season 9 - Episode 1 - Aired Apr 24, 2017

Fishing detective, Jeremy Wade, embarks on the biggest and most complex investigation of his career; to unravel the mystery of what happened to the passengers of a ship torpedoed in the mid-Atlantic during World War II.

star 7.88
208 votes
Asian Slayer

#14 - Asian Slayer

Season 4 - Episode 4 - Aired Apr 22, 2012

When Jeremy Wade travels to India's Himalayas to investigate grisly river attacks, he is surprised to learn that the suspected culprit is a sacred animal. Does he heed warnings from the local people that he'll be cursed for life if he touches the creature, or will he pursue his need to solve the mystery?

star 7.88
121 votes
Face Ripper

#15 - Face Ripper

Season 5 - Episode 5 - Aired Apr 7, 2013

Angler Jeremy Wade investigates his most disturbing case yet - the story of a man who had his face ripped off in a remote Bolivian river. The journey through dangerous jungle ends with a confrontation with one of his oldest adversaries.

star 7.87
127 votes
Silent Assassin

#16 - Silent Assassin

Season 3 - Episode 3 - Aired Apr 24, 2011

Jeremy Wade travels to the Paraná River in the remote northeast corner of Argentina to investigate the death of a young girl. Once there, he discovers a second death. The people who live along this river bank fear the creature they call "River Dog." This is a new species to Jeremy, a river monster that somehow got under his radar. His discovery is not only the most alien of all river monsters, it is also the largest totally freshwater river monster Jeremy ever has caught!

star 7.84
226 votes
Body Snatcher

#17 - Body Snatcher

Season 6 - Episode 6 - Aired May 26, 2014

From the extreme north of South America, freshwater detective Jeremy Wade hears rumors of a body-snatching spirit said to drag men deep into the river, never to be seen again. A predatory freshwater mermaid, locals call her the Water Mama. She may be a beast of mythology, but the carnage she leaves in her wake is all too real. People are disappearing without trace, one-by-one from these waters and Jeremy is convinced there is a flesh and blood River Monster lurking behind the legend of the Killer Mermaids.

star 7.83
108 votes
Deep Sea Demon

#18 - Deep Sea Demon

Season 8 - Episode 1 - Aired Apr 7, 2016

Jeremy Wade is on a quest to find the one, true, legendary sea serpent; he treks from a horrifying attack in the English Channel, all the way to the darkest depths of the Mediterranean Sea.

star 7.83
291 votes

#19 - Razorhead

Season 8 - Episode 3 - Aired Apr 21, 2016

Investigating reports of a creature terrorizing the Florida Keys that is so violent it slices through flesh and breaks bones.

star 7.82
233 votes
Phantom Assassin

#20 - Phantom Assassin

Season 4 - Episode 7 - Aired May 20, 2012

Jeremy Wade returns to Australia's croc-infested Fitzroy River for one of his toughest quests yet — to catch one of the world's rarest fish. This shark is so elusive it was only discovered ten years ago, and so rare only a handful of people have ever seen it. Almost nothing is known about this endangered beast. Could it be a man-eater? The expedition turns Wade's knowledge of freshwater killers upside down as these animals seem to break all the rules.

star 7.80
179 votes
Volcanic Island Terror

#21 - Volcanic Island Terror

Season 9 - Episode 5 - Aired May 22, 2017

On a volcanic Pacific island, an ancient fishing community is being terrorized by something unknown in the water that’s been leaving behind mysterious puncture wounds on its victims. Can Wade uncover the identity of this fanged assailant?

star 7.79
190 votes
Colombian Slasher

#22 - Colombian Slasher

Season 5 - Episode 3 - Aired May 5, 2013

A honeymoon bride is dragged to her death in the Colombian Amazon. The most dangerous country in South America, Colombia is known for drugs, remote jungles and hostage-taking rebels. Jeremy Wade’s investigation is turned on its head by a crucial piece of evidence. He concocts a farfetched hypothesis about the bride’s death and in proving it he uncovers a little known method of killing which reveals the true horror of this tragic story. To complete the puzzle Wade pushes himself and his gear past the breaking point to understand what killed the bride in Colombia’s Rivers of Blood.

star 7.79
113 votes
Coral Reef Killer

#23 - Coral Reef Killer

Season 9 - Episode 3 - Aired May 8, 2017

On the tropical island of Sulawesi, Indonesia, a tourist snorkeler and several local fishermen have been killed and injured by a mysterious sea creature that impales its victims; Wade travels to the scene to investigate.

star 7.79
188 votes
Russian Killer

#24 - Russian Killer

Season 4 - Episode 5 - Aired May 6, 2012

The eerie disappearance of three men in far eastern Russia proves to be a baffling case for Jeremy Wade. His first visit to Russia takes him on a three-day trip to the Amur River where he seeks to uncover what happened to the fisherman and others who have met their demise on these waters. The prime suspect is a predator that can top a ton and exceed 18 feet in length — yet for some reason, not a soul will help him find it. Stonewalled at every turn, Wade begins to believe there is there a dark secret he's not meant to discover.

star 7.79
206 votes
Ice Cold Killer

#25 - Ice Cold Killer

Season 9 - Episode 2 - Aired May 1, 2017

When a sea monster washes up on an English beach, Jeremy Wade sets off to unmask the beast. His journey will take him to the ice sheets of Greenland and the fjords of Norway, where he races against the Arctic storm threatening to end his quest.

star 7.78
217 votes