Police now dismiss Tahir as the bomber who killed Julia but, in identifying Andy as the failed sniper, suspect a connection with the real killer. David links Longcross to Nadia's terrorist husband and finds out that Julia was aware of the prime minister's past indiscretions, suggesting a government conspiracy to silence her, led by her ex-husband, chief whip Penhaligon. David is taken off the case but is approached, seemingly by accident, by Julia's sacked PR, Chanel, before making an important discovery in Julia's flat.
—don @ minifie-1