"I have no idea why we are here," Castiel said, slight irritation in his voice, not directed at Peter. "It's possible whoever did so will reveal it to us in their own time." He didn't hold out much hope for that as his tone suggested. He already sound defeated, looked a little frayed about the edges, held together by string and will.
He wasn't without some sympathy for the rather lost looking man before him though he felt he should know a little more about him. "This isn't your time. You are from the future?" he prompted.