The creature held onto the Doctor tighter. He let out a grunt of pain, but didn't cry out.

"More than that," the Doctor said. "We've got to reverse what we've fed it. We've got to give the creature the opposite of---"

Oh, he didn't want to say it. He didn't want to, but it was the only way.

"We've got to give it the opposite of our grief for Sarah Jane. You've got to concentrate, Alan, think about the good times with Sarah, think about the things you've been trying to suppress when you're trying not to hurt."