Before Nathan left last night, he put Caleb on security mode. If anyone tried to break in, Caleb would launch an attack on them right away. If it was someone he knew, he would come out to greet them.

When Nathan came home last night, however, Caleb did not come out to greet him. Moreover, he was still nowhere in sight today.

"Caleb?" Nathan called. When there was no response, he went and found Caleb in a corner. Caleb had been powered off and was standing there silently.

Nathan turned his power back on, but there was no response. He tried charging him but it was to no avail.

He's...