A shooting in Central Park upends the lives of a disparate group of New Yorkers.

The search for the shooter begins-and the police are not the only ones looking for answers.

Charlie finds a new family. Regan and William's old wounds are revealed. Keith is shocked by revelations about the shooting.

Keith becomes a suspect-and begins to fear an even worse possibility. Charlie uncovers his first real clue.

Charlie learns a secret. William finds himself back in the family fold-with dire consequences.

The Hamilton-Sweeneys' twisted past proves crucial to unraveling the truth.

Charlie races to stop a new threat.

A citywide power outage puts the investigation - and multiple lives - in jeopardy.