Very impressive book with a most intriguing premise. I love continuity in series and it was lovely here to delve deeper into Rafiel's personality and life. The plot kept me guessing - what a clever, clever idea to send Marple on a tour where she doesn't know what she's looking for, it made for a very realistic investigation where she was in the dark for the greatest part of the book. I guessed the end before it happened but certainly not all of it. Great atmosphere throughout too, it was just stifling enough without being completely uncomfortable (And Then There Were None was barely manageable for me) and some good characters (I could happily have read a whole book about Elizabeth Temple, the headmistress). Nearing the end now of the Marple books so I'm glad I found a five-star book now so I can leave with a good impression. ( )