Played game and got to bf1 and decided to start over. I have gone down the pit and up the ladder to the cells on the other side of the prison. I have pulled the four levers and headed west only to be stopped by the last door which is locked. 2 or 3 other doors I have not been through which have levers on the inside to open adjoinging doors and can not remember how to get the last door open which leads to new passage. I looked around for a key to open at least one of the couple doors to help me on my way but can not find and can not remember how to proceed.