The third novella in this delightful series sees a newly married Mnemosyne Seabourne honeymooning on an island that has no magic, and then getting involved with a murder that could only have been carried out by magical means. Like the other stories in this sequence, it's a lot of fun, very readable and adorably cosy. I really like Mneme as a protagonist; she's sensible, prone to thinking before acting, and mulling things over with tea (and cake, if it's available). She's also taking great delight in, er, the rights and privileges of being a married woman and it's delightful to see two people obviously in love be allowed to be in love without having obstacles thrown in their way.
There's a nice epistolary element to the book, with parts of the story being told in exchanges of letters. I've always been fond of this and don't think it's used enough, so it was nice to see it popping up here, unexpectedly, especially since it's not been used in previous books in the series.
I see that there are more books set in the Teacup Isles (still a name I'm never going to take seriously), but they feature other protagonists, and not Mneme. I'll probably end up reading them eventually, but I'll miss Mneme. Still, if this is the end of her story, I'm happy where it was ended.