Joe Gage is responsible for the poisoned coffee. The scene separates the moment of the attack, the information the viewer receives, and the confession Warren eventually obtains.
Joe Gage acts while attention is elsewhere
Joe Gage poisons the haberdashery’s coffee. Daisy Domergue sees what happens and says nothing. The film parcels out that information in several stages: first it keeps attention on Warren’s confrontation with General Smithers; then it briefly goes back and shows that, during that distraction, someone had tampered with the coffee. The identity of the culprit is still withheld until the later interrogation.
The device changes the viewer’s relationship with an everyday action. When John Ruth and O.B. pour themselves cups, we know the contents are dangerous and they do not. The suspense no longer depends on imagining whether there is a threat, but on watching how long it will take for the harm to occur. The gestures of making a cup, bringing it closer and drinking it take on disproportionate importance because the narrative has given us information that the characters do not have.
Daisy occupies a different position. Her knowledge makes her a silent accomplice and allows her glances to be reinterpreted. Chained to Ruth and subjected to his blows, she retains an advantage he cannot see. Physical proximity does not guarantee control over what she knows. The scene exploits precisely that difference: the bounty hunter controls her movement, while she knows of a threat that lies within immediate reach.
The film does not need to identify the substance or explain its properties for the attack to make sense. Its dramatic function is to remove those guarding Daisy and throw the room into disarray. Turning the episode into a technical explanation of the poison would divert attention from what the story shows: a covert act, a witness who stays silent, and victims who believe they are carrying out a safe act.
Ruth and O.B.'s deaths change the room
The effects of the coffee destroy John Ruth’s authority in very little time. Up to that point, he had tried to control the guns and keep an eye on everyone present. The attack shows that his precautions were aimed at one kind of danger and left others uncovered. Violence can arrive through a shared object that belongs to the normal hospitality of the haberdashery.
O.B. dies without taking part in the web of deception that dominates the rest. His job had been to drive, tend the horses, and handle practical tasks. His death expands the reach of Daisy’s rescue plan: the conspirators accept eliminating whoever is convenient or exposed to the attack. The distinction between direct opponent and incidental worker disappears within their operation.
Ruth grasps the betrayal only once his body is already failing. The relationship with Daisy then becomes even more violent. She takes advantage of her captor’s collapse and ends up shooting him. The episode combines the damage caused by the coffee with a later act by the prisoner; summarising it by saying that Ruth simply drinks and falls erases the struggle that definitively transforms their relationship.
Mannix avoids drinking when Warren stops him. That fact will matter for the trust that develops between them. Warren identifies a threat that could also have killed him and acts in time. The later cooperation is not born solely from improvised affinity: it has a concrete precedent in an intervention that saves the supposed sheriff’s life.
The confession and what still remains hidden
Warren organises an interrogation that treats Daisy as the centre of the conspiracy. His reasoning starts from a purpose: someone wants to stop her reaching the gallows. The identities presented by the guests stop seeming like separate stories and begin to form a possible network. The person responsible for the coffee could be linked to any of the other men, although we still do not know how extensive that collaboration is.
When Warren threatens Daisy, Joe Gage admits to having put the poison in. The admission answers the specific question of who physically carried it out, but it does not dismantle the whole operation. The attack from beneath the floor immediately shows that there is still another participant outside the field of vision. The revelation of one truth gives way to another threat, rather than restoring definitive control.
The Domergue gang flashback later helps explain how the scene was set up. The people who seemed to have come together by chance had occupied the haberdashery and divided up their roles before Ruth arrived. The coffee is part of that created opportunity, although the film preserves the tension of a plan being carried out amid unforeseen events and the watchfulness of its opponents.
The sequence works because it distinguishes three questions: what happened, who did it, and what they are trying to achieve. The narrative flashback answers the first, Gage’s confession the second, and the group reveal the third. The ending of The Hateful Eight grows out of those partial answers: the survivors understand more and more, but they receive the information only after several deaths have made it impossible to restore the original situation.
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