Another enjoyable mystery. I still love the key characters and believe in them utterly. Kept me guessing but a pretty firm hunch allowed me to be suitable smug. Possibly a little heavy on the signalling of the big climax. Possibly too many references to the old cases - redundant for those who have read them and probably annoying close to a hard sell for those who haven't. Overall, though, another instalment in a great series. Must be bought for tv soon, surely.