Liz Bonnin joins an international team of palaeontologists in the remote badlands of Wyoming as they investigate a mysterious dinosaur graveyard. Packed with over a dozen skeletons, including the ferocious Allosaurus, distant forerunner of T-rex, the site is a treasure trove of Jurassic remains.This time, the team tries to figure out if the Jurassic's most vicious predator was involved in the deaths of super-sized beasts like the iconic Diplodocus which are buried at the site, helping to reveal why so many dinosaurs came here and what killed them in such great numbers 150 million years ago.