Slumping into his seat the Doctor watched the Master silently walk away, clearly not pleased. The Doctor wished he could take the Master out. He wanted to travel all of time and space with him but at the moment he just couldn't trust him around others.
He simply didn't know what would result from that, although he had a suspicion it would involve numerous bodies.
Dragging himself up from where he was sat at the table the Doctor trudged out of the kitchen and towards the console room. He hoped he could find something to distract himself with, maybe there were some repairs or something he could do.
Wandering in the Doctor rested his hands on the controls, staring at the rotor in contemplation. He supposed he could just take a quick trip somewhere…
The Master wouldn't be able to cause any damage or harm himself, the bracelets made sure of that. Should the other Time Lord try to leave, harm himself or others, sabotage the TARDIS or get his hands on a weapon he would immediately be knocked unconscious by the silver bracelets. The same would also occur should the Master try to remove said bracelets. It would be easy for the Doctor to go out on a short jaunt.
But would it really be fair to the Master, to just leave him for an unspecified amount of time and go out and enjoy his own freedom to go wherever he please while his friend could not?
Sighing the Doctor shoved his hands into his pockets, fingers brushing up against something. Tugging it out he realized it was only his psychic paper, for lack of anything better to do he casually flipped it open.
The Doctor felt his insides freeze and his hearts skipped a beat. No…
Written across his psychic paper was the message 'Prisoner Zero has escaped.'
But that could only mean…
Amelia!
Prisoner Zero must have escaped through the crack in her wall into her house! And he'd left her there with them! She could be in danger! The prison guard had sent him the message back at the house but he'd been distracted by the TARDIS's burning engines and then by caring for the Master and he hadn't realized the threat to Amelia Pond!
Jamming his psychic paper back into his pocket the Doctor rapidly began flipping switches and pushing buttons, flying the TARDIS back to where he had left little Amelia Pond. The Doctor needed to get her out of there and take care of Prisoner Zero.
Landing the TARDIS he ran out the doors, shouting Amelia's name in frantic desperation.