So near- so very near.

Escaping, hiding, planning, working, working, working... Only the touch of a button now stood between him and-

“Touch that button and I shoot. More than enough power for both your hearts - Master.”

He turned, sneering, because he knew how this story went. (A gun in four parts, strong enough to kill a Time Lord...)

“As if he’d ask you to kill.”

She smiled then; a smile he’d not expected. A smile of ruthlessness and danger.

“I’m River Song. He doesn’t need to ask.”

Still - she was the Doctor’s wife... He reached towards the button.

She fired.