In the early hours of the morning Commissario Guido Brunetti is called to his own police station where his wife is being held after deliberately breaking the window of a travel agency. Arranging sex tours is illegal in Italy but the acts the men perform abroad are not. It's therefore perfectly legal in Italy for a man to go to Thailand and rape a ten-year old girl. The sex tours are not so blatantly advertised these days, but for those who know what to look for in the advertising - "tolerant receptionists" and similar phrases - the tours are still available.
The book's recommended and given four stars. If you do read it, have a think about the title of the book when you get to the end - it's very clever and very neat.