Adalricus had been in Arithmancy when the Unspeakable teams had arrived so when his intruder alarms went off; he cast a hasty notice-me-not charm upon himself and made a mad dash down to the Chamber to hopefully run interference to prevent them from finding the hidden laboratories. He’d just managed to hide himself as he heard the portal open. "Ladies and Gentlemen of the Department of Mysteries, welcome to the Chamber of Secrets! Watch your step and please, no flash photography! Feel free to ask any questions to your tour guide. We here at Hogwarts Mystery Tours hope you have enjoyed your trip down to the fabled land of Salazar Slytherin’s Chamber of Secrets." Briallen finished her impromptu speech to the amused laughter and momentary applause of the Unspeakables.