Paolo Giana Maria Volonte is a lonely teacher who learns that two of his friends have been murdered in this twisting crime drama. He discovers that the victims were the recipients of threatening, anonymous letters. Paolo falls for Louisa Irene Papas, the widow of one of the dead men. He finds out too late that she may have been an accomplice to the murder when he learns she may be having an affair with a local man of importance.~ Dan Pavlides, All Movie Guide