Braxton nodded enthusiastically. "I planted the bomb in the year 2001, during the Halloween attack, as you know. I have memories of doing that now. In order to avoid detection, I took the circular hallway on the sixth level. You’ll be able to stop me outside the portkey office. There was an explosion from an errant Bombarda shortly after the attack commenced. I tripped, being careful not to set off the bomb. That’s your best opportunity to detain me."