A professor from Miami and a graduate student from Texas, put their brains together for the chance to win $100,000! Is it normal to have a tattoo? Is it normal to have sex in public? Find out on the new game show "Are You Normal, America?"

A report on details into the search for Natalee Holloway, a U.S. teenager who disappeared on May 30, 2005 during a post-graduation trip in the Caribbean island of Aruba.

16-year-old Sarah Johnson runs to her neighbor's house in Bellevue, Idaho screaming an intruder has shot her parents. Sarah says she never saw the intruder and has no idea who would want them dead.

25-year-old waitress Corey Parker is found dead in her apartment bedroom with over 100 stab wounds to her body. After two long years of intense investigation, detectives finally zero in on a suspect. But the crafty killer knows he's being watched.

A suburban Oklahoma town is rocked by the brutal stabbing murder of 27-year old Gary Larson and the rape of his girlfriend. The attacker leaves a trail of bloody footprints in Larson's house. Investigators must follow the footsteps to catch the killer.

Human remains found in a sewer are identified as Tristan Jensen, a 14-year-old boy who was reported missing. Investigators find it hard to believe that another teenager could be the prime suspect in one of the most gruesome murders they have ever seen.