Maureen O'Sullivan is a deception expert. She says that even though most people believe they can easily detect when someone is lying, they are wrong 50 percent of the time.

But some people are unusually adept at sniffing out a lie. O'Sullivan has found a special group who detect lies nearly 90 percent of the time. People with this ability make up only 1 percent of the population.

After screening thousands of people for their ability to catch a liar on videotape, 14 "ultimate experts" were identified. "We call them wizards," O'Sullivan said.