Misty, mysterious Venice is always a favourite "character", whether it be in fiction or biography. Venice does not give up its secrets easily, and Dibdin is a master at ensuring the tension builds and the plot is assisted through location. He is equally adept at characterisation - the restless, driven Zen, who confronts several ethical dilemmas along the way, and several of the supporting "cast" , all of whom come to life and populate the setting magnificently.
The story itself is intriguing, with enough revelations along the way. There is no great finale denouement, more a piecing together of the jigsaw, and one great personal revelation about Zen's family background.
I thought Dibdin was at his very best when the action moves to the Questura (police headquarters). I half expected Donna Leon's Commissario Brunetti to come strollign along the corridor!
The "chase" sequence - on foot and boat through wintry night time Venice was also excellent.
Thoroughly recommended for anyone who enjoys top quality crime fiction. No formulaic writing here!