The Farallon Islands lie just 30 miles west of one of the most densely populated urban landscapes on earth - San Francisco. Yet these jagged rock outcrops rising from the Pacific Ocean are among the wildest and most untamed areas in the world - haunted by storm, fog and current. The islands are also home to the largest known population of mature Great White Sharks. Two biologists, more akin to surfers in their outlook and passions, have manned these lonely rocks for over a decade, following every movement of the sharks - often in a small boat that's dwarfed by the 20-foot leviathans they study. Together they have acquired more knowledge about these fearsome yet beautiful animals than almost any other scientists on earth. Susan Casey first heard about the work of these men in a BBC documentary. Immediately intrigued, she set out to write a magazine story on them and the sharks they live amongst. Little did she know then that the islands, the biologists and above all the Great Whites would come to obsess her, forcing her back again and again to document an extraordinary community of men and animals. The Devil's Teeth is part history and part travel. It is part biology and part passion. It takes the reader to one of the planet's last untamed frontiers and reveals an astonishing predator that is terrifying, fascinating and strangely endearing.