For how thy memory has lingered on- In spite of cruelest winter's drear and howl- By inner mirror seen; I've dwelled upon, I must confess, my treachery most foul. Did Shakespeare pen a series of passionate sonnets, unknown to modern scholarship, ardently praising a mysterious dark-haired beauty? This tantalizing question is raised in a letter to literature professor Rose Asher. But the letter's author, Rose's star pupil, is not telling. A troubled, enigmatic young man, he plunged to his death in fron...