Caroline is asked by British Intelligence to act as a 'goat' to act as decoy to catch a 'tiger'. An ex-boyfriend of hers is a spy and she is told that he is the potential victim of an assassination plot, which she is brought in to foil. However, when the man tells her that he has resigned as an agent, Caroline sees that she has been employed under false pretences. She is indeed a decoy and only Paul can save her.
—don @ minifie-1