Using revealing composite portraits and case studies, psychologist Martha Stout exposes what the DSM-IV defines as "antisocial personality disorder." Put simply, sociopaths walk among us and they have no conscience. Stout r...

Who is the devil you know? Is it your lying, cheating ex-husband?Your sadistic high school gym teacher?Your boss who loves to humiliate people in meetings?The colleague who stole your idea and passed it off as her own? In the pages of...