The denouement of a 35-year drama takes place Thursday at the U.S. attorney's office in Manhattan. And I trust that my father, virtuoso violinist Roman Totenberg, who died three years ago, will be watching from somewhere. For decades he played his beloved Stradivarius violin all over the world. And then one day, he turned around and it was gone. Stolen. While he was greeting well-wishers after a concert, it was snatched from his office at the Longy School of Music in Cambridge, Mass.