You're 30 times more likely to be hit by lightning than attacked by a shark. Dog bites and bee stings cause more fatalities, so why are we so terrified of these demons of the deep? Blame "Jaws." The Steven Spielberg classic terrified millions in 1975, and decades later, the film still has teeth. But could a Great White really be a serial killer? We interview marine biologists and shark experts for answers. We also relive a true tale of a man-eating monster that terrorized New Jersey in 1916, a story far scarier than anything on screen.