I love Len Deighton, and this one does not disappoint. It's book two of Deighton's third trilogy (after "Berlin Game", "Mexico Set" and "London Match" & "Spy Hook", "Spy Line" and "Spy Sinker") about Master Spy Bernard Sampson and his wife Fiona. (The other two in this second trilogy are, or course, "Faith" and "Charity"). If you like spy books that have engaging characters while keeping you guessing, no one is better than Len Deighton!