Let's say you're about to hire somebody for a position in your company. Your corporation wants someone who's fearless, charismatic, and full of new ideas. Candidate X is charming, smart, and has all the right answers to your questions. Problem solved, right? Maybe not.

We'd like to think that if we met someone who was completely without conscience - someone who was capable of doing anything at all if it served his or her purposes - we would recognize it. In popular culture, the image of the psychopath is of someone like Hannibal Lecter or the BTK Killer. But in reality, many psychopaths just want money, or power, or fame, or simply a nice car. Where do these psychopaths go? Often, it's to the corporate world.