Othello, act by act
Each act has the plot in plain English, the quotes worth knowing, what Iago is up to, how the characters change, what it gives you for the essay, and a quick check. Work through one act at a time.
A secret marriage, and a grudge is born
Iago is furious that Othello, the great Moorish general, has promoted Cassio over him. For spite he wakes the senator Brabantio to reveal that Othello has secretly married Brabantio's daughter Desdemona. Brabantio is outraged, but Desdemona stands before the Senate and says she chose Othello freely. Venice needs Othello to defend Cyprus, so he sails there with Desdemona. Iago, meanwhile, bleeds the foolish Roderigo for money and vows to bring Othello down.
"I am not what I am." Iago
"I hate the Moor." Iago
"She has deceived her father, and may thee." Brabantio
He hides hatred behind loyalty, uses Roderigo as his wallet, and stirs Brabantio with ugly, racist images of the marriage.
We meet Othello at his height: calm, commanding, eloquent before the Senate. Remember this Othello. The fall is measured from here.
Evidence for race and otherness, and for love built on story. Brabantio's parting line plants the seed of doubt Iago will later water.
Why does Iago hate Othello?
How does Desdemona respond to her father?
What warning does Brabantio give Othello?
The trap is set
A storm wrecks the Turkish fleet, so the war is over before it begins and the mood turns to celebration. Iago goes to work. He gets Cassio drunk, has Roderigo provoke him, and Cassio ends up in a brawl. Othello, woken by the noise, strips Cassio of his rank. Then Iago, playing the loyal friend, advises Cassio to ask Desdemona to plead with Othello for him, knowing exactly how he will twist their closeness later.
"Reputation, reputation, reputation!" Cassio
"When devils will the blackest sins put on, they do suggest at first with heavenly shows." Iago
He engineers Cassio's disgrace, then plants the "ask Desdemona" idea, the bait he will later call proof. He tells the audience his plan in soliloquy.
Cassio falls, losing his position and his "reputation". The first domino. Othello is still calm and fair here.
Reputation (Cassio), and appearance versus reality (Iago dressing evil as help). The manipulation machine starts turning.
How does Iago get Cassio sacked?
What does Cassio mourn losing?
Why is Iago's advice to Cassio a trap?
The poison goes in
Desdemona, true to her word, keeps urging Othello to restore Cassio, which only helps Iago. In the famous temptation scene, Iago drips suspicion that Desdemona and Cassio are lovers, while warning Othello to beware "the green-eyed monster". Othello demands proof. By chance Desdemona drops the handkerchief that was Othello's first gift to her. Emilia finds it and gives it to Iago, who plants it in Cassio's room. Othello, tormented, swears revenge.
"the green-eyed monster which doth mock the meat it feeds on" Iago
"when I love thee not, chaos is come again" Othello
"I am your own forever." Iago
He hints rather than accuses, makes Othello beg him for the idea, demands the handkerchief as "ocular proof", and pledges total loyalty.
The hinge of the play. Othello moves from "chaos is come again", love as his whole world, to vowing murder, in a single scene.
Your core evidence for jealousy, manipulation, and appearance versus reality. For any "how does Othello change" question, this is the turn.
What does Othello demand before he will believe Iago?
How does the handkerchief reach Iago?
What is ironic about Iago warning against jealousy?
Jealousy takes over
Iago stages a conversation about Cassio's lover Bianca that Othello overhears and misreads as Cassio boasting about Desdemona. Then Othello sees Bianca with the lost handkerchief, the "proof" he wanted. Consumed, he strikes Desdemona in public and resolves to kill her. Desdemona, bewildered and heartbroken, sings a sad willow song, while Emilia argues plainly that wives feel and deserve as much as their husbands.
"I will chop her into messes." Othello
"Let husbands know their wives have sense like them." Emilia
He directs the eavesdropping scene like a play, turning innocent talk into "proof", and steers Othello from doubt to a murder plan.
Othello's language collapses from poetry to butchery, and he strikes his wife in public. The noble general is almost gone.
Othello's decline (watch his language as evidence), and women and power (Emilia's challenge, Desdemona silenced).
What does Othello misread in the Cassio and Bianca scene?
What does Othello do to Desdemona in public?
What argument does Emilia make?
The truth comes too late
Iago has Roderigo attack Cassio, then kills Roderigo to silence him. Othello smothers Desdemona in her bed, telling himself it is justice. Emilia discovers the murder, realises what her husband has done, and exposes the whole handkerchief plot. Iago kills Emilia for it and is caught. Othello, understanding at last that Desdemona was innocent, gives his final speech and kills himself beside her. Iago refuses to explain himself and is led away.
"Put out the light, and then put out the light." Othello
"loved not wisely, but too well" Othello
"Demand me nothing. What you know, you know." Iago
He clears loose ends, then is undone by his own wife. At the end he refuses to explain, leaving his evil unknowable.
Othello sees the truth too late, briefly recovers his old nobility in his last speech, then ends himself. The arc completes.
The catastrophe and recognition. How much sympathy does Othello deserve? Emilia as truth-teller. The unknowable nature of Iago's evil.