Part 4.

Juliet cousin Tybalt, offended that romeo had sneaked into the Capulet ball, challenges him to a duel. Romeo now considering Tybalt his kinsman, refuses to fight him. Mercutio is incensed by Tybalt's insolence, as well as Romeo's ''vile submission'' and accepts the duel on Romeo's behalf. Mercutio is fatally wounded and Romeo, angered by his friend's death, pursues and slays Tybalt..