Thanks to ODA for the heads up.
Arrow Ep. 518 is in production... pic.twitter.com/V3tDydV97O
— Marc Guggenheim (@mguggenheim) February 18, 2017
Arrow Ep. 518 is in production... pic.twitter.com/V3tDydV97O
— Marc Guggenheim (@mguggenheim) February 18, 2017