In this episode, Ella Al-Shamahi explores the fate of the Neanderthals - asking why they became extinct, and discovering how they live on inside of us today. The programme starts in the caves of Gibraltar, which may have been the last place the Neanderthals survived. Discoveries here have shown the Neanderthals lived a good life - feasting on seafood and wild game. These were a people who were supremely well adapted to their environment. But about 40,000 years ago they disappeared. Why?