In the Criminal Minds Season 11 episode the BAU heads to Phoenix, Arizona, to track an UnSub who tortures victims through extreme sleep deprivation. This episode is widely recognized by fans for its brutal content and its status as the first-ever episode without Dr. Spencer Reid (Matthew Gray Gubler). Plot Overview
He is one of only six UnSubs in the series to never be caught by the BAU, a point of significant frustration for long-time viewers. Criminal Minds Recap "Awake": Season 11 Episode 8
He approaches parents at rest stops, claiming their taillight is out, then abducts their children.