India, Oct. 23 -- Spoilers ahead for Dark Matter Season 2, Episode 9, 'How to Build the Box.'

One wrong choice can change a life. In Dark Matter, it can create an entirely new one. With just one episode left in Season 2, Apple TV's multiverse thriller is finally bringing its scattered storylines together. Episode 9, titled "How to Build the Box," pushes Jason Dessen and the people around him closer to a decision that could end their journeys across realities for good.

Agent MacNamara gets a taste of his own cruelty. Blair comes up with a plan to shut down the Boxes. And Charlie finds himself face to face with a brother he thought he had lost.

But the biggest question is whether Jason can stop the multiverse from spiralling further out ...