# Watch Arrow TV Shows Streaming Online Full Episode # br Airs : Wednesday, at 8:00pm on The CW br Genres : Action Adventure Crime br Actors : Katie Cassidy. Colin Donnell. John Barrowman. br br Plot Overview : br Nyssa returns to Starling City and tells Oliver that her father, Ra??? al Ghul has given Oliver 48 hours to find Sara??? killer or the League of Assassins will start killing the citizens of Starling City.