He hesitates, but reaches out and takes the screwdriver from her. "It can't hurt anyone," he promises. "I did what you asked."

He looks down at the small device that he's made especially for her. Of course, the Master would figure a way through his safeguards on it, wouldn't he? Brilliant old Master. The Doctor would admire him if he didn't hate him so much.

"Don't you think that maybe you called out to help Rose because you care about Rose?" he asks. "Or care that a person was being hurt? You're better than you think you are."