Professor Bryan Sykes, the world's leading expert on human genetics, set a goal to locate and analyse as many DNA samples as possible with links to the yeti. In doing so, he found himself entering a strange world of mystery and sensationalism, fraud and obsession and even the supernatural. Protected by the ruthless vigour of genetic analysis he was able to listen to the stories of the yeti without having to form an opinion. The only opinion that mattered was the DNA.Three hai