What Happened In Vienna, Jack? by Daniel Kemp

What Happened In Vienna, Jack? marks the introduction of Patrick West, a young detective in London, to Jack Price, a seasoned Secret Intelligence Service operative who witnesses West shoot dead an IRA commander at the scene of an attempted armed robbery not far from where Jack Price lives, in his Soho apartment.
At the end of WWII, Jack Price is on a government assignment in Austria where he hears of a secret meeting that took place in Vienna before the start of the War. He has told only one person the full details about that meeting.
He needs someone like Patrick West to join his small group to track down any survivors of that meeting or others they may have spoken to. Jack Price needs the secret to go away, but there are others with different ideas.