Great white sharks are enigmas. They ruled the oceans long before dinosaurs inhabited the earth. Yet we know nothing about them. Scientists speculate they can live for 60 years and grow to a massive 20 feet long. They heal miraculously from severe injuries and can sense a heartbeat from miles. There is one place on earth where it is possible to study great whites in the wild: a spooky outcrop of jagged rocks off the coast of San Francisco. This wretched place plays home to a handful of shark-obsessed scientists. One man dives with the sharks, another plans to surf there. This is the riveting adventure about great white sharks, and men so obsessed that they will endanger their lives to get close.