James Fallon is an award-winning neuroscientist at the University of California, Irvine. His start-up company, NeuroRepair was voted the top new biotech firm of the year and has engineered major breakthroughs in stem-cell research. After spending his entire career studying how our brains affect our behavior, Fallon's research suddenly turned personal. While studying brain scans of several family members, he discovered that one perfectly matched a pattern he’d found in the brains of serial killers. This meant one of two things: Either his family’s scans had been mixed up with those of felons or someone in his family was a psychopath. He discovered the scan in question was his own.