Othello (1965)

Desdemona (Dame Maggie Smith) defies her father to marry the Moor of Venice, the mighty warrior, Othello (Sir Laurence Olivier). But Othello's old Ensign, Iago (Frank Finlay), doesn't like Othello, and is determined to bring about the downfall of Othello's new favorite, Cassio (Sir Derek Jacobi), and destroy Othello in the process, by casting aspersions on Othello's new bride.