Possible Clues:

• When Otello dies in 'Otello'
• When Othello hides to overhear Cassio's boasting
• Part of "Hamlet" in which Ophelia drowns
• When 'Double, double toil and trouble' is chanted in 'Macbeth'
• When John Proctor confesses in 'The Crucible'
• When 'Ave Maria' is sung in 'Otello'
• When Ophelia makes her last appearance
• When "eye of newt" is mentioned in "Macbeth"
• When Othello says to Desdemona, "... would thou hadst ne'er been born!"
• Last part of a play, perhaps