After a colleague is kidnapped by the criminal multimillionaire she is spying on, Sam is ordered to kill him to keep him from being tortured and compromising the team. But her colleague delivers a stunning revelation - he has information on who tried to assassinate her in Tangier. If Sam carries out the order to kill him, she will never find out.

After witnessing a brutal murder, Sam discovers that Jack Turner, the criminal multi-millionaire she is spying on, is engaged in sabotage to make millions on the stock market. But the discovery comes too late for her colleague, Aidan Marsh, who rushes to stop a London office tower from exploding - only to get caught in the blast.