It's all AU.

The Master pauesd outside the library, regarding it for a long moment before stepping inside. He had a large collection of books back at the office building he'd taken over, but they were all books he'd read.

He was looking over some interesting books on supernatural phenomena when he caught a glimpse of blond hair out of the corner of his eye. He turned, raising an eyebrow at the young woman standing nearby. "May I help you with something?"