Wilf calling was not something he'd expected. He had left the man's granddaughter with a case of amnesia just to save her life, so he didn't expect to hear from him again.
But when he did, the Doctor could hear the terror in his voice.
"Doctor?"
"Wilf? Hi! How's things at home? How's..."
"She's been taken, Doctor. She's been taken away from us!"
"How? Why? Who?"
"That fellow who killed the American President a few years back. I know that face. Slimy git. She was in the back garden and then he was here and he took Donna out the gate."
The Doctor felt the blood drain from his face.
Wilf was still telling the story. "I shot at him with the paint gun but I missed him. Now he's got her. What do we do now?"
So this was how the game was to be played, how the pieces were moved. The Doctor fought to keep his voice steady and even.
"Don't worry, Wilf. I'm going to get her back. At any cost."