EPILOGUE

The Doctor was alone in the TARDIS. He watched from the scanner as Sarah walked from the Police Box exterior, taking in her surroundings. Then he threw the switch that would take him away from her, into the vortex, and back home to Gallifrey.

He had lied to her. He had to, to protect her. For there was no rule excluding humans from his world, but the telepathic summons to return home had been the perfect opportunity to return Sarah to her own home, Earth - Hillview Road, East Croydon, to be precise.

She would have travelled with him forever. But until his own dark future was resolved, he could no longer take the risk.