Irreconcilable Differences - Arrow

ARROW - Thursday, December 7, 2017 at 9pm on CW50 - BLACK SIREN KIDNAPS LANCE - Quentin Lance (Paul Blackthorne) is kidnaped by Black Siren (Katie Cassidy) and Cayden James (guest star Michael Emerson), who are looking to trade Lance's life for a weapon of mass destruction. Oliver (Stephen Amell) and Team Green Arrow must figure out a way to save Lance while still keeping the city safe.  Laura Belsey directed the episode written by Beth Schwartz & Sarah Tarkoff (#609).  Original airdate 12/7/2017.