Niko Papastefanou

After a fifteen-year-old is brutally beaten up by High School bullies, his wish for revenge unknowingly unleashes the Terror of Halloween.

An elite team of FBI profilers analyze the country's most twisted criminal minds, anticipating their next moves before they strike again. The Behavioral Analysis Unit's most experienced agent is David Rossi, a founding member of the BAU who returns to help the team solve new cases.