WARNING: SPOILERS/NSFW - DC on SCREEN #103 - Arrow 4x12 - Unchained | ReviewRoy is back in Star City, and Thea is real sick.  Looks like she has to take a life or her life is taken... or something.  But Roy! Oh, he's under the control of The Calculator though.  And that dude is a MASTER hacker.  Almost as badass as Felicity.  I hope they don't have some kind of secret connection... Oh, and Holt continues to be awesome.  So does Felicity.  Let's talk about this Arrow, shall we?