Books in the Quiller Series series

Quiller's survival skills have never been so crucial as in this eerily prophetic mission torn from today's headlines. Standing over the smoldering corpse of the agent he had sworn to protect, Quiller vows to make things right. The killer's trail leads to a terrorist network targeting the next American flight out of Berlin. But what are their plans for this flight, and why are they trying so desperately to get their hands on a nuclear weapon...?