With three fresh challenges, including making a huge tiered cake, ahead of them, who will crack under the pressure?
Can Frances get past the style-over-substance criticism to create something incredibly tasty and impressive to look at?
Will Ruby get over her constant self-doubt to pull off the bake of the series? Or will cool Kimberley present something unique and full of flavour?
Paul Hollywood and Mary Berry will be there to oversee the progress, and Mel and Sue will of course be helping (and eating!) the finalists through this last ordeal. But who will win?
The Great British Bake Off, BBC2, 8pm