Either nothing happened, including the old man who went out to the hospital, because he didn't have the habit of using seat belts, or there was a police presence, so there was no poisoning and the car overturned, and he finally arrived safely.
Either they are all dead. The old man driving was poisoned to death. The few people who escaped from behind the blackboard found out that they had entered the real murder chamber and were all dead. And staying is the real way of life---the electric fan relieves the pressure and preserves a person's living space. But because the old man was killed beforehand. . So they are all dead.
Either everyone else is dead except the planner himself. He executed the murder plan perfectly.
He was knocked out and stayed in the room. This was planned by him, and the fan was also arranged by him. The other people who "escaped" died behind.
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