Harry could see him sweating in the torchlight, his white skin contrasting strongly with the black of his hair and beard.

“Snape!” he shouted. “Severus Snape!”

“Snape has been cleared by this council,” said Crouch disdainfully. “He has been vouched for by Albus Dumbledore.”

“No!” shouted Karkaroff, straining at the chains that bound him to the chair. “I assure you! Severus Snape is a Death Eater!”

Dumbledore had gotten to his feet.

“I have given evidence already on this matter,” he said calmly. “Severus Snape was indeed a Death Eater. However, he rejoined our side before Lord Voldemort’s downfall and turned spy for us, at great personal risk. He is now no more a Death Eater than I am.”

Harry Potter and the Goblet of Fire, Chapter 30, The Pensieve