Scenes from Jaws Fest, the 30th anniversary of the film on Martha’s Vineyard.  Steven Spielberg's film is generally considered one of the scariest movies ever made. The frightfest is based on the book by Peter Benchley. The plot is simple: The tourist season of a resort island is devoured by a great white shark. The ensuing "fishing trip" to catch the monstrous man-eater is filmed with power and suspense and plenty of scares that has had audiences jumping out of their seats for decades--and staying out of the water.