This year Friday the 13th marks the onslaught of especially creepy zombies, demons and creatures that go bump in the night. From San Diego to Baltimore, thousands of haunted houses, dungeons and creepy trails open their gates to crowds of chill-seekers who pay good money to experience crazy characters, realistic animatronics and sheer terror up close and terrifyingly personal. Many of these multimillion-dollar attractions have been planned since the day after last year's Halloween and draw in fright enthusiasts from across the country to experience America's Scariest Halloween Attractions.