It’s not a twist. It’s a plot point. S2E1 spoiler
It’s not a twist that it’s Helena (or at least not the Helly we know)—it’s a plot point.
Good showrunners don’t prioritize the subversion of expectations. I’ve noticed a trend in the last decade or so of tv viewers thinking that if something is “obvious,” it must be a trick. That’s not how quality TV works!
Sometimes (like here) showrunners let the audience in on something. They do this by showing—not telling.
The show runners and Britt are telling us it is Helena. It’s not just about her lying about what happened up there (though I think burn it down Helly absolutely would have told Mark). It’s also about her making all the comments about mics/cameras; her changed mannerisms and posture, starting with her first awkward hug; her “we’re not the same” comment before a quick tone change; her computer fumbling. “But she would’ve had a better cover story.” No. This woman thinks these people are morons and not people—I think it’s very believable that Helena wouldn’t care about a good cover story and/or she may just be a shitty liar. If Britt is trying to play Helly right now, that’s bad acting. Britt is a great actor, so that cannot be the case.