In 1976 a packed coach crashed into the Amazon killing 39 people. By the time the bodies were pulled out by rescuers some had been so viciously mutilated by they could only be identified by their clothes. Tracking down survivors and eyewitnesses of Piranha attacks Jeremy Wade reveals why the Piranha fills our nightmares.

In the Deep South of the United States lives a river monster with the reputation of the Devil. Blamed for a series of violent attacks on humans, Extreme angler Jeremy Wade heads to Texas on its trail in an attempt to uncover the facts behind this animal’s notoriety.

Wade travels to Germany where he meets victims of a beast that has been raising its snout above the surface of freshwaters in Europe for the past 700 years. We discover that the Wels catfish is an aggressive predator of man eating proportions.

In the darkest depths of the Amazon lurks a dinosaur. Legends tell of an evil spirit inhabiting an enormous fish. Taller than a man, it is covered in scales and crushes its prey with a tongue made of bone. Jeremy Wade encounters the legendary Arapaima.

A man swallowed whole by a fish, a body eaten alive from within. Another penetrated in a most unnatural fashion, yet more with multiple stab wounds. Jeremy Wade is in pursuit of some of the Amazon's most notorious flesh eaters.

No fish inspires the same terror as the shark. A creature with an insatiable hunger for brutal violence. But at least these killers are confined to the oceans. Or are they? Expert angler Jeremy Wade investigates the deadly Bullshark.