It was like Voldemort felt the iron grip, he had had on his soul-piece lessen until it could drift away. For a heartbeat, he feared that it would disappear into the ether. But then he noticed Harry holding fast. The spectre floated over to the young man and merged with him. Meeting Harry Potter's eyes, he could see a red tint colouring them brown. After a heartbeat, the vibrant green was back.