For a murder mystery, this is a charming story. I very much enjoyed both characters, and a bit more from Devon and Jonty. I didn't guess whodunnit, and all the action was real enough to keep me on my toes. There was a slight danger of this being an echo of Devon and Jonty--Cato is similar to Jonty as we knew from the first book. But Cato and Vigge are individual and earn their own story. ( )