What happened to the ancient human species that inhabited Europe and part of Asia before the arrival of Homo Sapiens? Why, at a certain point in prehistory, are there no archaeological traces left of these men of extraordinary strength? And what happens when the two human species come face to face in the same territories? Alberto Angela, in this episode of Ulisse, guides us to the solution of this intricate enigma "at the crime scene" directly from the wonderful places inhabited by Neanderthals and then by Sapiens in Italy and Europe.