Five of the ten chefs return to face Monica and Gregg in a skills test before the judges must decide who will be eliminated. Only the best four chefs will cook for legendary Michel Roux Jr. For the skills test, Monica gives them 12 minutes to extract the marrow from a bone and then prepare a dish with it. It's a daunting challenge, and for those chefs who've never encountered bone marrow before, it's frankly terrifying. At the end, Monica and Gregg must decide who will be leaving the competition. The pressure now mounts as the four remaining chefs must raise their game for Michelin-starred legend Michel Roux Jr. Michel cooks two classic oyster recipes - oysters Rockefeller and oysters Kilpatrick - before asking the chefs to recreate the dishes in just 60 minutes. To achieve delicate flavours, stunning presentation and attention to detail, the chefs will have to dig deep to impress. Then, they are asked to prepare their own classic dish for Michel and Gregg in just one hour. With so much at stake, nerves are running high. After judging each plate on presentation and flavour, Michel and Gregg will send one more chef home. The best three remaining chefs will go through to the quarter-final and move a step closer to winning the title of Professional MasterChef.