THE HEART-STOPPING SEASON FINALE - Everyone's lives are in danger as Ra's al Ghul (guest star Matt Nable) puts forth his final plan. Oliver/Al Sah-him (Stephen Amell) must decide if he's strong enough to take on this new role and what it will mean for everyone on Team Arrow, and his soul. John Behring directed the episode with story by Greg Berlanti & Andrew Kreisberg and teleplay by Marc Guggenheim & Jake Coburn (#323).