The apparently accidental death of a blind man leads Montalbano to an island off the coast of Sicily, where another disappearance, that of a local fisherman, leads to the discovery that both he and the blind man had each deposited huge sums of money in their respective bank accounts. After the mysterious disappearance of another blind man, the investigation begins to focus on a charity for the blind, which turns out to be less innocent than it first appears to be...