Escape through History Level 5 Walkthrough: Look on the desk and take the scalpel.
Look at the helmet next to the bed and use the scalpel on the helmet strap to take it.
Use the scalpel on the map and take the hook. Tap the hook and helmet strap to combine them.
Look in the left corner of the main room and use the hook to pull the ring. Pick up the key.
Escape through History Level 5 Walkthrough: Use the key on the drawer of the desk in the side of the room with the bed. Take the scrap of paper inside. Also take the wire on the desk.
Look at the machine on the same desk and attach the wire to it.