Doctored Evidence by Donna Leon

“A smart and stylish fast-paced case of intrigue and corruption” in the Venetian-set, New York Times–bestselling mystery series (Los Angeles Times).
 
After a wealthy elderly woman is found brutally murdered in her Venetian apartment, the police suspect her maid, who has disappeared and is heading for her native Romania. But when it becomes clear the maid could not have had time to kill the old woman before catching her train, Guido Brunetti decides—unofficially—to take on the case himself.
As his wife reads about the seven deadly sins, Brunetti realizes that this is probably not a crime motivated by greed—rather, the motive may have more to do with the temptations of lust. But perhaps Brunetti is following a false trail and thinking of the wrong sin altogether . . .

“The detective’s humane police work is disarming, and his ambles through the city are a delight; but it is this peculiar insistence on turning every case into a morality tale that gives Leon’s fiction its subtlety and substance and makes us follow Brunetti wherever we must—even into the sea.” —The New York Times Book Review
 
“Holds together as an elegant puzzle, as a character study and as a story of an officer’s need to reclaim truth in all its complexities from those who want to find easy answers to life’s, and death’s, perplexing mysteries.” —The Washington Post Book World
 
“A compelling and intricate series of events as convoluted and intricate as the canals of Venice itself . . . Another expert mystery.” —The Baltimore Sun