River Monsters: Season 8

Deep Sea Demon

44min - Extreme angler and underwater detective Jeremy Wade goes in search of the real creature behind the enduring legend of the sea serpent -- starting with a violent attack in the English Channel and culminating in the dark depths of the Mediterranean Sea.

Death Down Under

41min - When six men vanish in the remote waters of northern Australia, extreme angler Jeremy Wade travels to the scene and embarks on one of his toughest investigations yet -- taking on some of the deadliest animals on the planet in his search for a suspect.

Razorhead

43min - Something is terrorizing the Florida Keys, attacking both visitors and locals alike -- striking its victims so violently it is slicing open flesh, even smashing bones. Jeremy Wade is determined to identify the assailant, but is quickly out of his depth.

Terror in Paradise

44min - In the West Indies, tales of swimmers being ripped from the surface of the islands' blue holes have been attributed to a monster known as the Lusca -- half shark, half octopus. Extreme angler Jeremy Wade's investigation takes him to dangerous new depths.

Invisible Killers

42min - Jeremy Wade has hunted down freshwater killers for 30 years, but those waters are infested with darker, deadlier creatures - parasites.

Devil of the Deep

44min - 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.

Special: Secrets at Sea

Special: Invisible Killers

Special: Deadly Superstitions

Special: Blood River

Special: Killer Discoveries

Special: Aftershow