In Donna Leon's Commissario Guido Brunetti series, the Venetian inspector has been called on to investigate many things, from shocking to petty crimes. But in The Waters of Eternal Youth , the 25th novel in this celebrated series, Brunetti finds himself drawn into a case that may not be a case at all. Fifteen years ago, a teenage girl fell into a canal late at night. Unable to swim, she went under and started to drown, only surviving thanks to a nearby...