On Criminal Minds, the BAU has enrolados with some of the most sinister serial killers seen on network television. In this slideshow, we count down the best of the worst -- the truly terrifying mad men and women our team has pursued.
Episode 10 of Criminal Minds season 7 is going to introduce a new woman in Hotch's life as he trains for a marathon. But how long will she be sticking around? Is there going to be anything mais than just training between them?