After wrapping Erin up in the chains, he put a lock on it and then backed away.
He had glanced back wondering if Derek and Cora were still going at it, but that wonderment quickly disappeared when Erin started to transform.
Stiles quickly looked over at Erin. He couldn't take his eyes off of her. Her transformation wasn't like any he had ever seen. This was so much worse. "Maybe this was a bad idea," he said to himself as he took a few more steps back.