The Doctor shut his eyes and pressed his fingertips to the Master's temple. The connection was brief, a short burst of information directly from his mind into the Master's. The place that belonged to the Doctor was small and secret and hidden behind old memories and things the Valeyard chose to forget. The place the Doctor wrapped this information, a series of numbers and letters, was in the Master's mind behind the instructions on how to fly a TARDIS. It was somewhere he imagined the Valeyard would never look.

And as quickly as it began, the connection was over. The Doctor looked almost winded by the experience.