The Doctor realised that his words had been heard wrong. Which wasn't good. His respiratory bypass system kicked in automatically at the feeling of pressure on his throat and his gaze followed the movement of Jake's other hand. Golden eyes widened at the sight of the knife.
"Jake. Listen to me... You don't want to do this. You've got it wrong.." He had to try, even though he doubted his words would have much bearing.
"You were warned," he heard K9 say from somewhere near Jake's feet and it was swiftly followed by the sound of the robot dog's laser being fired.