Professor Heine sends the princes on an assignment to investigate rumors of a criminal in the palace, and the truth shocks them.
Don't let yourself in—
—لا تدخل هكذا
Lasst euch nicht …
¡No entres…!
¡No entres…!
Hé, frappe !
Ehi, non aprire senza...
Não entrem assim!
Не входи...