Arrow: "Unthinkable" Extended Season Finale Trailer Now Online

The CW have released an extended (30-second) trailer for next week's Season Two finale of Arrow, titled "Unthinkable." As Deathstroke's Mirakuru army continues its chaotic march through Starling City, A.R.G.U.S. is prepared to level the city to prevent the mayhem from spreading. Inside, Arrow has until dawn to somehow apply the cure developed at S.T.A.R. Labs to the fifty or so super-soldiers attacking Starling, all while  trying to stop Slade, who has kidnapped someone close to him with the intention of following through on his promise to kill one more person Oliver loves. Check out the trailer, along with the official description of the episode, below.

OLIVER MUST DECIDE ONCE AND FOR ALL IF HE'S A KILLER OR A HERO — Slade (Manu Bennett) moves forward with his plan to kill one more person in Oliver's (Stephen Amell) life. While Oliver has fought all year to be more than the killer he once was, when Slade kidnaps someone close to Oliver's heart, Oliver is pushed to the edge and realizes sometimes it takes doing the unthinkable to stop the monster. Meanwhile, Diggle (David Ramsey) takes on Amanda Waller (guest star Cynthia Addai-Robinson) with a little help from some friends, and Thea (Willa Holland) turns to Roy (Colton Haynes) in her time of need. John Behring directed the episode with story by Greg Berlanti and teleplay by Marc Guggenheim & Andrew Kreisberg (#223).