Given how long it has taken to get to this moment of 'great revelation' (the mid-season finale was effectively two episodes on its own), What They Become was a rather a damp squib.
Skye - who turned out to really be a Marvel comic book character I'd never heard of - has a moment of transformation at the end of this episode, but everything takes place in a darkened room and it's not that obvious what actually happens. I certainly wouldn't have realised that she was supposed to have developed "earthquake powers" without reading an online explanation of the episode!
The Agents Of S.H.I.E.L.D. showrunners really need to take a look at The Flash to see how you introduce superhuman characters into a TV show, and stop pussyfooting around.
Sure, S.H.I.E.L.D. isn't a superhero series, it's spy-fi but in a world of superheroes and it appears these 'special' characters are going to be playing a larger role in the show moving forward.
The 'Marvel Universe' identity of her father was also, sort of, revealed by dropping his first name (Cal) into conversation. But, again, it's almost as though the writers and directors of Agents Of S.H.I.E.L.D. were embarrassed by his comic book origins and this 'discovery' is ultimately just an Easter Egg for hardcore comic book fans when it should be a central part of the story.
Picking up from ...Ye Who Enter Here, an episode brimming with brilliance because of the potential that it suggested, What They Become took a lot of running about and revisiting old touchstones to get to where it was going.
Along the way, a Big Bad was felled, Ward did what Ward does, and a member of Coulson's team got petrified, but ultimately everything was building to the big moment at the climax. And, for me, it just wasn't grand enough. The poor lighting and confusing black-on-black imagery certainly didn't help, but, even though 'something' happened to Skye and Raina, it ultimately fell flat for me because it didn't go far enough.
The show has been building to this moment, not just this year, but since it began and the grand event felt rather rushed after all this time. I could have done with less running about in the first couple of acts and longer time being spent on the third act of this episode.
I realise that the explanations will come in the second half of the season (whenever Channel 4 decides to show that), but I'd have preferred a bigger hook - and more details - to hold my attention over the Winter break.
Up to this point, this second season of Agents Of S.H.I.E.L.D. has been brilliant, among the best shows on television, but What They Become was a misstep, from the almost casual disposal of Whitehall (perhaps he'll come back?) and the amount of running to-and-fro that felt like padding, to the disappointing transformation sequence (the rocky cocoons were very cool though).
There's been all this talk about how this is introducing The Inhumans into the Marvel Cinematic Universe, but I have yet to see an Inhuman character I recognise from the comic books. Where's Medusa? Where's Black Bolt, Karnak, Crystal, Maximus etc?
That said, the denouement was a nice touch with the shot of a second Obelisk and the creepy guy without any eyes, so hopefully when the show returns it will be with the chutzpah of the earlier episodes rather than the filler of this one.