There was a rumbling whoosh of air as if a giant had drawn a deep breath, and the faint smell of brimstone told Narcissa that the second floor was now filled with fire. Flames licked the door as the orange-gold glow shone through the gap at the bottom of the warded door. They could feel the intense heat beating against the walls as Fire alarms went off with a high-pitched scream. Peasegood doubled down, shielding them all as they scrambled up the stairs, waiting for that tremendous heat to crack the wards and spill over all of us.