4th in the series. With these books the storyline is almost secondary to the day-to-day problems of Queen Betsy. She gets a half brother, spends time with her half-sister (who's becoming more and more freaky). Has lots of fights with Eric, lots of sex with Eric. Postpones the wedding several times. Oh, she also manages to take down a serial killer - all in 200ish pages.
I really don't have the enthusiam to elaborate any further.