After testifying against world-renowned opera singer Giovanni Casonetto, Stephen Gordon receives a mysterious package from the opera singer himself days after Casonetto's execution. What manner of package would Casonetto send the man whose testimony sent him to the gallows? And does Gordon dare open it? "Casonetto's Last Song" is based on the short story by 1930s writer Robert E. Howard (who is best known for creating the character Conan the Barbarian).