Pietro is a revered teacher, Teresa his brilliant and precocious student. Their affair is both illicit and tempestuous. After one fight, Teresa suggests that each tell the other a secret, one so shameful or shocking that were it to be made public, it would destroy that person’s life. Time passes, Pietro’s stature as a writer grows and his family settles into the comfort of a bourgeois life. But he is haunted by the possibility that Teresa may one day reappear and tear apart his world with the secret she knows.