"Doctor." The voice on the other end of the telephone was the voice he had most feared and desired to hear. His nemesis.

"Master?" he gasped.

An evil chuckle came down the line. "I love it when you say my name."

The Doctor's breathing was becoming heavier. He adjusted his collar, which was beginning to seem uncomfortably tight.

Martha looked to Jack, concerned. "Is he talking to who I think he's talking to?"

Jack nodded. "The naughty timelord chat line. 24 hours of dirty, evil chat, one-2-one."

Martha rolled her eyes. "No wonder the TARDIS's phone bills are so high."