Move ahead until you find another ladder. Climb it up and look around. The path will lead to the right, and you will keep hearing the prisoners' screams. According to the sign, the path leads to the admin block.Keep going straight ahead until you see a door on your left. Go through it to meet with one of the inmates, but this one will be the first to talk some sense. On the right, there is a hole in the floor. Jump down to get to the next level.