Martha smiled at that, although, like the Doctor, she knew that escape from Taxon would be far from simple. He'd achieve it - she had complete faith in him - but it would take a while.

"I'm all right," she said, "I'm not staying in one place. My friends - Wesley and Fred - are working on a way to keep my location hidden."

She was more concerned about the Master targeting her loved ones, as he'd done in the past, but that hadn't stopped her from taking a few precautions.

"He'll be more interested in you now you're here."