People gettin' stabbed, people gettin' dead. Two guesses who is responsible for both: Iago. This treacherous turncoat has escalated his betrayals and lies resulting in the escalation of the tragedy. Roderigo is his pawn; so is Cassio. But this is no friendly game of chess. Deaths come because of Iago's words as well as by his hand. Be sure you understand who-kills-whom and why by taking our exclusive, interactive quiz to Act 5, Scene 1 of Othello. Rank your score against others and see how you compare. What have you got to lose? Nothing! What do you have to gain? A better grade!