Three or four years ago, I watched a mystery film on TV. It wasn't the name of the movie, but I can't remember what the plot was like. It was like an escape plan. See the question for details.

However, the person in the coffin came out later and took revenge on a policewoman (I think it was a policewoman). She put the policewoman in the coffin and there was a person who looked like Sherlock Holmes. In the end, the policewoman came back and acted one or two episodes a week on TV. Escape Plan Xiao Ming was sentenced to life imprisonment for murder and was locked up in the most secure prison in the world. The only way to escape was to bribe the prison staff to help him escape. Therefore, he bribed the prison doctor who was about to retire and prepared a plan to escape from prison with the prison doctor. The prison doctor said,"The night after tomorrow, I will arrange for a corpse to be buried. The coffin will be placed in the mortuary." You sneak into the morgue when no one is looking, hide in the coffin, and then you'll be buried in the morning. "After you leave, I will dig out the coffin. Then you can escape from here." I just have to trouble you to stay with the corpse for a night..." 'This is really a flawless plan,' Little Ming thought happily to himself… On the night of the appointment, Xiao Ming slipped into the morgue and saw a coffin. Therefore, he hurriedly hid inside. Although he was very afraid of the corpse beside him, However, when he thought that he would be free tomorrow, he overcame his fear and hid inside… Early in the morning, the police carried the coffin and buried it. Through the coffin, Xiao Ming heard the thick yellow soil. It gradually covered the coffin. Xiao Ming hid in the coffin and did not dare to make a sound. Little Ming was secretly delighted in the coffin as he waited for the arrival of the prison doctor. Time slowly passed, but there was no movement from the grave. Little Ming couldn't help but become nervous. Where was the prison doctor? Don't tell me you took my money and didn't come to save me… The nervous Little Ming couldn't care less about his fear of corpses. He picked up the lighter that he had prepared beforehand. He wanted to find something in the coffin to escape, but when he saw the corpse beside him, that terrifying face... But he couldn't help but scream the most mournful cry ~~~ Answer: The dead person was the doctor. Xiaoming was buried alive. I accidentally sent two questions. If there's no answer for this, it's easy to find the answer in any question.