Don't interfere!" The Doctor silenced her angrily. "I cannot will my own destruction..

The bemused Brigadier shook his head. "You and that TARDIS..

The Brigadier had no wish to shake hands with the improbable young man in the ridiculous frock-coat..

I'm hard to get rid of." He smiled. All Tegan's suspicions about the boy came flooding back. "So it seems," she replied icily..