Alexander Calvert's Anarky returns in a big way this episode. Last seen escaping from an ambulance after being burnt to a crisp by Thea, he's back with a face mask and revenge on his mind, although not for the person you'd initially assume. He's targeting Ghosts rather than Thea, and then later - after Oliver sets him loose - tracks down and threatens Damien Darhk's wife and daughter. Although he escapes once again, it's not something that Damien Darhk is going to take lightly. He tells his wife that Machin will never hurt her again, which indicates that he's got plans to have the matter taken care of. Is this going to be a job for the Ghosts or, given the threat Anarky poses, could we see a face-off between the pair of villains at some point?