The patisserie chefs face chocolate week, beginning with a sharing dessert using both chocolate and a favourite ingredient of judge Cherish Finden. For the showpiece, the teams must construct chocolate showpieces on a house-of-horrors theme, including a moving part, along with 48 smaller treats - all in just five hours. 

It's the quarter-final and the teams make Black Forest gateaux and mini roulades, before going back to the 70s as they create disco-inspired sugar chocolate showpiece desserts.