A foreign president is critically ill and everyone thinks he is dying, and there is no cure for his disease. Then, an English doctor discovers a way of saving his life, but he has to wait to undergo the operation. It is then found out that there is a traitor within the embassy, and the finger is instantly pointed at his much younger wife. All of Bureau Two believe her to be the traitor, except Beckett, who won't believe it (does he ever?) and thinks that the security guard is responsible. He and Nataliar (the wife) are then kidnapped by the people the traitor is working for, and one woman sets up a bomb next to them, with green pressure pad to detonate it. Ros, of course sets this off.
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