Draco Apparated to the ground floor just in time to spy on Harry Potter advancing towards his path, followed by a team of Aurors. They were right on time. His alarms were linked to the Auror Office, and a magical violation check was scheduled. He waited for them to knock on his door before opening it. He was afraid that the Children of Salazar might attempt another attack. He then remembered that he hadn't had time to hide the book and translations, although it was unlikely anyone could reach the underground chamber before he did.