After making a seemingly routine arrest of a man exposing himself in Central Park, Rollins has a bad feeling about the suspect (Pablo Schreiber) and calls upon the entire squad to help. With no way of immediately identifying the man, he outplays the detectives at every turn and becomes wanted for a heinous crime. A shocking theory comes to light and Barba is unable to get his conviction, which puts Benson in harm's way rainbow puts her wedding on hold afther she was told her sister is in trouble
