Patisserie Week - Semi-Final

It is semi-final week for the remaining contestants, who know they are just three patisserie challenges away from the biggest day in their baking lives. First comes the Signature and a deceptively simple challenge, with Paul Hollywood and Prue Leith looking for perfection, followed by Prue's complex, multi-layered Technical. The pressure intensifies when they are asked to create a spectacular Showstopper that could grace a Parisian patisserie - but who has the skill to reach the Bake Off final and who will fall at the final hurdle?