He was an evil god from subspace, using the power of evil to smash through the barrier between subspace and reality and possess an eleven-year-old boy who had just been killed by the Killing Curse. The Dark Mark floated overhead. Before him stood Dumbledore, who had just Apparated there. His strength exhausted, he radiated an aura of evil.
Oh no! Wrong place! This isn't the Earth I wanted to return to!
Holy crap! That Dumbledore wants to kill me! What do I do? Help, I'm in a real hurry!