I am currently reading C. J. Sansom's 4th book called Revelation. His first 3 books set during the reign of King Henry VIII were Dissolution, Dark Fire and Sovereign. So far, I think that Revelation is the best. It is interesting to have a mystery set in the times in England when there was so much going on between the papists and the reformers. I really like Matthew, his main character and enjoy following him as he follows leads to solve the mysteries.
C. J. Sansom also wrote another book set around the time of the Spanish Civil War.
The title escapes me now, but Madrid was in the title. If anyone has read that book and recommends it, I would be interesting in knowing.