Dr Tori Herridge explores the Jurassic Coast of Devon and Dorset, walking from the 150-million-year-old cliffs of Kimmeridge at its eastern end, back through time to the even older red cliffs of Budleigh Salterton, to reveal why the coast is packed with world-class fossils. Along the way she encounters the biggest sea predator ever to have lived and a global disaster that nearly destroyed life on our planet.