Been a while since I posted in this thread, so I've got a few recommendations
The Skull Beneath The Skin by PD James - her version of an Agatha Christie closed-room whodunnit. Not a typical PD James novel, but I like her writing style.
Why Nations Fail by Daron Acemoglu and James Robinson. A look through five hundred years of history to explain why countries like the USA and Australia became wealthy, why Argentina was wealthy and then went downhill, and why others are poor. Not sure I agree with every point they make, but I found it thought-provoking.
The Big Nowhere by James Ellroy - exactly what you expect from an Ellroy novel; brutal murders, corrupt cops, femme fatales, random historical figures (Howard Hughes in this case) and a plot that speeds along.
London Belongs To Me by Norman Collins. Written in 1945, and telling the fictional tale of a group of disparate Londoners between Christmas 1938 and Christmas 1940. What I really liked about it is how it immerses you in that era, which is something only books can do.