Professor McGonagall, and Lupin, each of whom was battling a separate Death Eater. Beyond them, Harry saw Tonks fighting an enormous blond wizard who was sending curses flying in all directions, so that they ricocheted off the walls around them, cracking stone, shattering the nearest window--

"Harry, where did you come from?" Ginny cried, but there was no time to answer her. He put his head down and sprinted forward, narrowly avoiding a blast that erupted over his head, showering them all in bits of wall. Snape must not escape, he must catch up with Snape -

"Take that!" shouted Professor McGonagall, and Harry glimpsed the female Death Eater, Alecto, sprinting away down the corridor with her arms over her head, her brother right behind her.

Chapter 28