Where were you last night ? Will asks me as we walk, just the two of us. And you too, he adds, grabbing Zach, who was coming in front of us, by the wrist.

"You're going to let go of me first," Zach said quietly. And then what are you talking about?

You know, my power. Where were you ? I see five people on this map: Jo, you two, Luke, and another guy who ran into me. You and the other guy were for three hours at the other end of the castle, where the classrooms are, doing whatever and running around.

I look at Zach. He doesn't know...