I never read one book at a time after all I have genetic disposition towards multitasking. At present I am reading four books (when I have the chance).
These are Michio Kaku's Physics of the Impossible , Matin Gardiner's Churchill and the Jews and Robert Wright's The Evolution of God.
Gardiner is excellent as usual, Kaku is highly entertaining but I am finding
Wright's work to be a bit of a slog. Will keep you posted...