Lance and the others arrived a while later and when they arrived there, William has already dealt with everyone. What greet them is the frozen statues of Mark's abductors running away with their faces filled with fear and anguish before they die.
'William did all these?' Agatha asked, she could not believe that her son would be able to take someone's life. William, ever since he was a kid, is not someone who would even hurt anyone. He is the one being bullied instead. And seeing how he had changed from that kind of person shocks both Agatha and Alfred.