Airs: Wednesday, May 13 at 8/7c

Before Brandon Routh heads off to the potential Arrow-Flash spin-off, Ray Palmer will play a major role in Arrow's season finale. The episode will feature a touching exchange between Ray and Felicity, whose romance is done for good, according to executive producer Marc Guggenheim. But Ray and Felicity aren't the only ones getting some resolution. Malcolm and Thea will also find closure after quite a tumultuous season. However, not every story line is going to be wrapped up nicely. "[The finale] ends on a cliff-hanger again… but not the kind of cliff-hanger like, 'Is he going to live?' or "Is he not going to live?' " Guggenheim teases. In fact, the episode will even reveal who the Big Bad of Season 4 will be!