It's a time-honored Halloween ritual: children getting dressed up as scary creatures and trick-or-treating. It's all harmless fun, except for the part where parents feel they must protect their children from sinister strangers. Each year, police and medical centers across the country follow another ritual, X-raying candy to check for razors, needles, or other objects that might have been placed there to hurt or kill innocent children. Special events are held that offer kids "a safe Halloween," suggesting that there are real lurking dangers far worse than spooky costumes. Yet year after year, few if any sinister foreign objects are found. This scary tale is essentially an urban legend.