Doctored Evidence

When a wealthy Venetian woman is found brutally murdered, the prime suspect is her Romanian maid, who dies in a tragic accident while fleeing the city, carrying a considerable sum of money and forged papers. When the old woman's neighbour returns from abroad, confessing to have given the maid the money out of pity, questions begin to arise, and Commissario Brunetti decides to take the case on himself. But what could have been the true motive for the murder in such nebulous circumstances if not greed? Or is Brunetti thinking of the wrong sin altogether?