I was thinking earlier in the season that we the viewer are getting such a rosy picture of David Clarke and began to think this "image" being projected onto us is a false and a Red Herring and that he isn't as "innocent" as we are meant to believe. Was he framed from the whole terrorist angle? Yes. But does he have something else in his closet that he is definitely guilty of? If I'm a betting man, I'd say hell yeah. There has to be something at the end that's going to question everything that Emily has been leading up to. And maybe this skeleton ties directly into Satoshi background and would be the perfect arc to kick off Season 2.

As for Nolan, I have been trying to crack what he is getting out of all of this. As you pointed out, there is definitely something brewing with his backstory. What it is, I have no idea.