The Queen's Sorrow - Suzannah Dunn

This fed my new-found hunger for historical fiction perfectly - a really gripping story that kept me hooked right up to the terrible (but totally satisfying) conclusion, combined with lots of atmospheric period detail as London under Mary Tudor is described by a sundial maker just arrived from Spain. I believed in the characters and in their (sometimes shockingly naive) choices, and I also came away wanting to find out more about the real Queen Mary.