Knockout Week continues, as the second group of amateurs get their first taste of professional cooking. They head to an award-winning modern Italian restaurant run by head chef Antonio Favuzzi. The contestants are responsible for serving up every dish on the menu for a busy lunch service. Afterwards, it's back to the MasterChef kitchen for an Invention Test to show John and Gregg just what they have learnt. In a last chance bid to stay in this year's competition, each amateur chef must demonstrate they can invent a dish from scratch that looks and tastes exceptional and is worthy of gracing the table of a professional restaurant. In an unexpected twist, the formidable Professional MasterChef judge, two Michelin-starred Marcus Wareing returns to help John and Gregg assess the six amateurs. After this, one of them will be going home. Who will crumble under the pressure and who will make it through to Friday's challenge - the gateway to this year's semi-finals?