After beginning this stage, the game assigns you a new starting point, meaning that you do not have to look for another winding key. Your task is to acquire the lighter. It will allow you to light the candle, located in the starting room.
Firstly, leave the room through the door marked in the picture.
You will now find yourself in a small corridor. You have to reach the room on the other side of the indicated doorway, but at the start of the stage, the future victims are in that very room. Wait for the hero's mask to stop burning, and then enter the room.
Once here, wait until 3 pm, and then go to the next room.
You will find a safe behind the exposed picture. Click on it, and you will acquire the lighter. Now return to the starting room via any path you wish.