S7 E1 • Abomination canadienne

Selon des légendes canadiennes, un serpent immense hanterait les eaux et s'attaquerait aux pêcheurs. Jeremy Wade tente de démêler le vrai du faux. Il s'intéresse pour cela aux esturgeons dont certains mâles peuvent dépasser les cinq mètres ainsi qu'aux maskinongés, cousins du brochet réputés pour leur combativité.

S7 E2 • Mekong Mutilator

Jeremy is on the shores of the Mekong River in Cambodia to look for a monstrous fish that has blinded, killed and recently sliced clean through a man's testicle.

S7 E3 • Prehistoric Terror

Wade calls on the same instincts he uses to catch living monsters to uncover the most deadly underwater giants of all time. He must read the water (and in some cases the land) for clues in order to bring long-forgotten beasts to light. Using Wade's keen understanding of modern-day monsters, top scientific discoveries and state-of-the-art CGI, the apex killers of the prehistoric era such as the 25-foot, buzz saw-toothed Helicoprion and the bone-crushing Dunkleosteus, come to life as ancient monsters are featured on River Monsters for the first time.

S7 E4 • Alaska's Cold Water Killer

Recent reports of fishermen vanishing without a trace on Alaska's south coast leads Jeremy to America's Last Frontier on a mission that takes him on the hunt for one fish he's never hooked before -- the mighty king salmon. When the investigation takes an unexpected turn, Jeremy finds himself in shark-infested waters, observing the salmon shark! Jeremy makes himself shark bait to prove that these fish won't attack a human - even if that human is diving right into the middle of their feeding frenzy.

S7 E5 • South Pacific Terrors

Jeremy goes to Fiji to investigate reports of people being attacked underwater and tries to find out if there are multiple culprits or if a single perpetrator is to blame.

S7 E6 • Africa's Deadliest

Jeremy Wade returns to Africa's Okavango Delta to investigate a pack-hunting carnivore blamed for mauling the victims of a capsized boat. This time, Jeremy decides to put on his dive gear and offer himself as live bait in croc-infested waters.