Inside the Boudoir room you can draft in Blue Prince, you will find a safe hidden behind a folding screen, and you might have trouble with the code.

The Father and Son is an interesting mystery in Indiana Jones and The Great Circle that involves unlocking a safe by solving a Polybius puzzle.

As Dusk Falls safe code As the Holts explore the house they've broken into, Jay puts the safe code in his pocket. But when it's time to crack the safe, the slip of paper has gone missing.