The Doctor deduces that the freighter is a slave ship loaded up with Tharils to be sold as time machine components, but the immense weight of Rorvik's damaged ship, designed to contain the Tharils, is now collapsing the fragile void of the micro-universe in which they're all stuck, pulling everything inside ever closer. Written by
Did You Know?
Now unless we work very closely together we could be caught here until the crack of doom. Oh, what's the use? Can I have one of your pickles? I had a rush lunch.
Why not. It's his last meal.
Well, that goes for all of us.