Romeo and Juliet Act 3, Scene 1
Mercutio and Benvolio enter talking in the public square. Tybalt arrives looking for Romeo. Romeo arrives and Tybalt instigates trouble by calling him a villain. Romeo responds by saying that he loves Tybalt (for now they are cousins through marriage). Mercutio interferes with their arguing and picks a fight with Tybalt. Romeo and Benvolio try to break up the fight, but Mercutio ends up getting stabbed by Tybalt. Benvolio helps Mercutio to a nearby house. Mercutio keeps yelling: "A plague o' both your houses!" Act 3, Scene 1, line 90
Benvolio returns and tells Romeo that Mercutio is dead. Romeo is outraged: "This day's black fate on more days doth depend;/ This but begins the woe others must end." Act 3, Scene 1, lines 118-19
Romeo and Tybalt then fight. Romeo kills Tybalt and then flees, as Benvolio informs him that the citizens of Verona are awake. If the Prince finds Romeo, he will be put to death. Soon, the Prince, Capulet, his wife, Montague, and his wife, arrive on the scene and question what has happened there. Benvolio informs them of all that took place. The Prince exiles Romeo, and if he is found, he will be put to death. All exit.