Steve takes Deadly back in time to discover the deadliest animals that ever walked the earth - the dinosaurs. Studying fossilized remains at London's Natural History Museum is just the start. Steve sees this prehistoric world brought to life in a computer-generated show down of deadly dinos. Starting with humongous herbivores that were the size of two articulated lorries, Steve then shows us their lethal defenses, before meeting the most terrifying dinos in the Jurassic pack - the carnivorous predators. Steve also reveals how our modern day animals measure up to dino deadliness.