Samantha and Philby attend an Espionage Writers Convention where they meet a former KGB agent-turned-novelist, Alexsandr Tseitsev. Philby and Tseitsev - former adversaries - discover that they deeply respect each other. But later that night, a KGB double agent about to be exposed by Tseitsev murders him. Samantha is seriously injured while trying to catch the fleeing murderer, leaving Philby to follow a trail of cryptic clues to find the killer. While Samantha recovers, Philby plunges into a dangerous game of cat-and-mouse and Cold War-era espionage!