Book: Set in the UK, political thrillers, involving any monarchy or revolution; books about arson or related to burning.
The main character of Royal Crush is a princess of Genovia whose father is the current ruler (although he'll be passing the crown on to his eldest daughter soon). There are quite a few of the characters who are members of different monarchies. There's also an off-screen revolution that occurred in one character's country. I'm using it to claim this day.