The second the Patronus arrived at the top of the Astronomy Tower and he could understand the message, he sagged with relief - then ran.
Even on his broom, he doubted that he could have made better time, and he barely managed to skid to a stop before he crashed into the huge wooden doors to the hospital wing and gave himself a concussion.
Wouldn't be the first time.
Seeing his father, he had to try hard not to cry, to be a man - but he made his way over to the bed and looked down. "Dad," he whispered.