Secret Box 3 - The Madhouse

The Madhouse box of secrets, the third and final box in a trilogy to be solved (increasing difficulty) The House / The Mansion / The Mad House. 

A storyline has also been built around the trilogy, the key to which can be found at the end, after the last box has been opened: The Madhouse (QR code for the story available on the box).

Secret box ideal for escape games, very difficult!
Instructions and solution supplied with the box.