Well interesting. I don't think they left one story thread without a cliff-hanger. Diggle in the hands of Isabel. Ollie and Laurel trapped. Mirakuru army bearing down on the city. Felicity getting a call from STAR labs. Roy still out and running out of venom serum. Thea running away. Sara still AWOL. Whew! Two episodes to go.
Obviously, STAR has the cure. I mean, there's no way for Arrow to beat the army and Slade without it. As to where Sara ran off to, probably for help, but I definitely don't think it was to shack up with her companion from the Legion as someone else suggested here, I think. Judging by previews, could she be the one who went to get Merlin?
Anyway, if anyone is following DC news on the movie front, the next Superman movie now not only has Batman as a front-runner, and Wonder Woman in some way, but now they've added Cyborg as a cameo. I presume they'll introduce the man. But that's four members of Justice League, which has now been confirmed to be the movie following Superman/Batman. And it appears they'll be adding Aquaman, Green Lantern (hopefully a good one), and Flash. I don't know how they are going to successfully intro characters like this in a team film, but I guess if they go the route of the New 52 storyline, it could work. (Briefly: Batman found an alien object and sought out the 'rumored' Superman to ask if it was his. GL comes on the scene, dispatched by his Corp to investigate the object too. They all fight. GL calls in his buddy Flash. WW sees the fisticuffs and wants to get involved. Then Aquaman finds a similar object in the ocean and joins. Turns out to be several of these things and before the heroes can all get used to each other, Darkseid launches his attack.) I just wish it wasn't the same director (Zac Snyder) for everything. Give the property to other creative minds too! This has the strong potential to be an unmitigated disaster. I'm holding my breath.