'Arrow' Recap: Thea Leaps Back into Action to Save Roy Harper from Harm

After the mess that was the civil war episode of "Collison Course," Arrow gets (way) back to basics in this episode, "Doppelganger." After a lengthy absence, Roy Harper is back and Thea puts back on her Speedy outfit. That's not all either. Laurel Lance is also "resurrected," even if it's just as a new mask for Black Siren. Even if all these returns end up being temporary, which is likely, they still facilitate a deeply satisfying and weirdly nostalgic episode of Arrow.