The fate in the box - Michelle Lovric

Fogfinger rules Venice. His Fog Squad and spies are everywhere. The Venetians fear him and obey him.
Every year one of their children is lost in a grisly Lambing ceremony. The child must climb the bell tower and let the Fate in the Box decide their destiny. Most end their days in the jaws of the primeval Crocodile that lurks in the lagoon. Or so Fogfinger tells them. But a chance meeting by a green apricot tree between Amneris and Tockle may be the beginning of the end for Fogfinger.

Silk and sewing, a magical glass kaleidoscope, mermaids and misunderstood Sea-Saurs, talking statues and winged cats, blue glass sea-horses, a spoiled rich girl and a secret society are just some of the ingredients in Michelle Lovric's exquisitely imagined and superbly plotted fourth fantasy set in Venice.