We picked three random words: prison ⸻ copy paste ⸻ Houdini
So we made a manual for prisoners with hidden tricks from Houdini.
Our goal was to make the manual look very formal and almost boring so the jailer would not expect anything suspicious.
If you browse through the book attentively you can find easter eggs referring to Houdini. So is the titel for example 'The man-ual' referring to the man, Houdini.