8pm Sun 20 October 2013 C4
Mark Evans travels to the Himalayas to find the real story behind the centuries-old Yeti legend.
He risks altitude sickness at Everest Base Camp, where the photograph of a footprint in the snow set off Yeti mania in 1951. He traces the legend through ancient manuscripts, holy relics and a Nazi expedition, and meets people convinced they have come face-to-face with the creature known in the west as the Abominable Snowman.
Meanwhile Professor Sykes reveals the results of his DNA tests on the Yeti hair samples he's collected. The results are spectacular and unexpected.
Yeti, Bigfoot, Abominable Snowman, Sasquatch and Almasty are just some of the names for mysterious creatures across the globe that have fascinated cryptozoologists and confounded scientists for decades.
Are they an ancient hominid, a member of the human family like Neanderthals? Are they giant apes or some other species? Or are they simply hoaxes? A leading British geneticist believes he has the tools to finally answer the riddle.
Oxford Professor of Human Genetics Bryan Sykes has assembled substantial physical evidence, which he subjects to the most sophisticated DNA tests available, as he and presenter Mark Evans hope to answer scientifically, once and for all, the mystery of Bigfoot.