RENE RETURNS TO NTA — Oliver (Stephen Amell) turns to an old friend to help battle Diaz (guest star Kirk Acevedo). Meanwhile, Rene (Rick Gonzalez) is out of the hospital but has a hard time re-adjusting to life as Wild Dog. Also, Lance (Paul Blackthorne) discovers something shocking about Black Siren (Katie Cassidy).
COLIN DONNELL GUEST STARS — The pressure mounts for Oliver (Stephen Amell) who begins to wonder if he will lose everything in his battle to save Star City. A familiar face returns.