Fatherland by Robert Harris
This is not just your ordinary thriller – it is, in fact, superior in just about every way. Set in an alternate universe where the Nazis won World War II, this is a crime story like no other. Harris’ classy writing, original story and setting as well as his imaginative extrapolation of a Nazi world lift this out of its nominal genre and into somewhere far better. If you like thrillers, or crime novels then this is a great read. If you like twentieth century history, or specifically the history of World War II, then this is a must read.
There is also a movie based on this book – I will have to get it out in the near future.