An invitation to an exclusive event during the Venetian Biennale gives Honorary Consul Nathan Sutherland the perfect chance to drink prosecco in the sunshine and meet some of the greats of the art world. And then a world-famous critic is decapitated by one of the installations in the British Pavilion.

A terrible accident, it seems, until a postcard is discovered in the victim's pocket: an image of Judith beheading Holofernes. But this is not just a one-off. Before long, three more postcards have been sent out with deadly results.

As the bodies pile up, Nathan finds himself getting closer and closer to the truth, but when he himself receives an image of Death bearing a scythe, it becomes a race against time to save his own life . . .