In The Elder Scrolls 5, if a player was locked up in prison, they could escape through the following methods: Use escape tools such as chains, ropes, etc. to unlock the prison door or window. 2. Find help from other players or NPCs. They may provide some tools or information to help escape. 3. Try to use various skills or missions in the game to improve your escape ability, such as unlocking passwords, solving puzzles, etc. If there are monsters or other threats in the prison, you need to avoid them and find a safe place to escape. It was important to note that if you were locked in a prison in the game, it was best not to take the risk and try to escape by yourself. Instead, you should wait for the right time or seek the help of other players or NPCs.