Perfect Spy, A by John le Carre; 1986/2011. Softcover.

Magnus Pym, ranking diplomat, has vanished, believed defected. The chase is on: for a missing husband, a devoted father, and a secret agent. Pym's life, it is revealed, is entirely made up of secrets. Dominated by a father who is also a confidence trickster on an epic scale, Pym has from the age of seventeen been controlled by two mentors. It is these two, racing each other and time itself, who are orchestrating the search to find the perfect spy ...