The Doctor watched Chase for a moment, hands stuffed in the pockets of his lab coat. He knew full well that when Chase was like this, trying to talk him out of anything was far more trouble than it was worth.

"Fine," he said simply, not adding and when the demons that live in the cracks of spacetime show up, don't say I didn't try.

Hell, he wasn't sure if this would even work like Chase wanted it to.