Well, here we are at "The Box," and blimey, things are getting properly dark, aren't they? This episode certainly cranks up the tension, plunging us deeper into the grim realities of the Institute's nefarious operations. It's a bit of a nail-biter, seeing what horrors they're cooking up for these poor kids.
Luke's escape plans are taking shape, and it's a testament to the young cast's grit that you're rooting for them every step of the way.
Meanwhile, Tim's plodding investigation in the outside world is finally starting to bear fruit, with his storyline weaving ever closer to the main event. It's all rather compelling, even if you haven't cracked the book.
The show's still pulling its punches a tad on some of the more gruesome details, which might irk the purists, but it keeps the momentum going. It's a solid, unsettling chapter that keeps the mystery bubbling nicely. Not quite a full-throttle sprint, but it's certainly not dawdling either.
Rating: 7.5/10 - A gripping, if grim, instalment that pushes the plot forward and leaves you wanting more of the unsettling truth. Right on.