Agents of S.H.I.E.L.D. can be a weirdly frustrating show at times. When it's good, it's really good, but not for reasons that are all that interesting to talk about. It also has difficulty in trying to balance different storylines, so that when it's really good in one area, it has problems in another that don't kill it, but just drag things down a bit. This episode, "Chaos Theory" is a great example of that, putting a temporary bow on the Lash storyline while kind of fumbling some stories in the background.