It's not quite fiction, but it could be -- I'm enjoying Operation Mincemeat
by Ben Macintyre, a non-fiction history of an Allied intelligence ruse during WWII that involved planting a dead, faked British officer to wash up on the shores of Spain carrying papers that would fool the enemy about the invasion of Sicily. Lots of nice background about the quirky intelligence officers who cooked up the con, many of whom were novelists and frustrated adventurers.
I usually read (and write) historical espionage fiction but this is doing the trick. It was also a movie called The Man Who Never Was
. As far as the characters go, it's about as close to fiction as you can get.