19 contestants arrive at the MasterChef Kitchen for a flavour matching 'Mystery Box' challenge. With everyone eager to impress the judges, one contestant pushes himself too far and burns his hand.
DCI Stanhope and DS Ashworth investigate a suspicious death in an army barracks, aided by Joe and an enthusiastic member of the military police. Although the demise of commanding officer Dev initially looks like suicide, a case for murder is quickly established and the team's first task is to find a motive. Sensing a connection to Ollie, a soldier killed in Afghanistan, Vera interviews the victim's loyal comrades and Ollie's grieving family, discovering a traumatic event that nobody wants to talk about.
The remaining candidates battle it out to try and win the opportunity to set up a business with Alan Sugar and receive a £250,000 to put into the new company. Their final task is the the interview stage. At the end of the show Lord Sugar announces this year's winner.