Steve Backshall continues his pole-to-pole expedition in Texas, investigating another deadly force of nature - tornadoes. To experience what it's like to be caught in the 200mph winds of a tornado, Steve stands behind the engines of a fighter jet and fires them up.

Heading inland, Steve goes fishing for an alligator gar, the largest fresh water fish in North America, but nothing can prepare him for the prehistoric monster he reels in. Travelling on to California and Mexico, Steve dives underwater to meet the fastest shark in the ocean and a huge male sea lion. Finally, the team ride into the desert, cowboy-style, to find a red diamond rattlesnake. Show less