Arrow season four will be coming to an end next week with what is appearing to be a large scale finale. The Arrow team has to go up against villain and evil-mastermind Damien Darhk one final time.
Watch the extended promo here:
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OLIVER TEAMS UP WITH A SURPRISING FORCE TO STOP DAMIEN DARHK – Oliver (Stephen Amell) teams up with a surprising force in an attempt to stop Damien Darhk (guest star Neal McDonough) and his magic once and for all. John Behring directed the episode with story by Greg Berlanti and teleplay by Wendy Mericle and Marc Guggenheim (#423).