"Ready?" Tove asked without looking at me. He started walking before I answered. "Duncan, you don't need to come with us," I told him as I hurried after Tove. Duncan followed me the way he always did, but he slowed. "It's probably best if he does," Tove said, tucking his hair behind his ears. "Why?" I asked, but Duncan smiled, excited to be included. "We need someone to test on," Tove replied matter-of-factly, and Duncan's smile instantly faded."