Which one is real

Rating: 9/10 (11 May 2020)

Is he a police officer or a psychiatrist? Although the previous doubts were rationalized in the second half of the movie, including who was the prisoner No. 67, the connection between Rachel who fled and Andrew Reddez, the picture of the little girl in her dream, and the scar on the prisoner's face Sources and so on, but will he be brainwashed successfully?
The partner did not cooperate in the first half, the dean did not cooperate with the review of the prisoner, and others laughed at him at the meeting. Did the repeated headaches and dreams suggest that what he did at the time was half fantasy and true.
The car was bombed, which is confirmed. But why should we blow up the car?
Why did the partner disappear midway, only to show up at the last time
Is the interrogation process real? Is the run written by the prisoner real?
Is Rachel's impossible escape from the prison implying that all of this is impossible, and that what is impossible in reality can be rationalized by imagination-directly setting her to escape, no matter how she escaped.
In this way, the male lead is a mentally ill, and there is a high possibility of immersion in his own world.