Golden egg. Donna Leon. 2013.

When Brunetti’s wife, Paola, asks him to look into the death of the handicapped man who worked at their local dry cleaner, Brunetti is surprised to find nothing on the man in the official records: no birth certificate, no driver’s licence, no credit cards. And yet, there is the body. As secrets unravel, Brunetti suspects an aristocratic family might be connected to the case. But why would anyone want this sweet, simpleminded man dead?