Martha was becoming pretty much resigned to being stuck in this place. It wasn't so bad, considering. No one was trying to kill her, which was a big plus over a few places she'd been with the Doctor and some without, there was no shortage of basics like food and shelter, and she could always get away when she needed privacy.
Tracking people down again was more difficult, but they usually showed up again sooner or later.
For now, though, she really should be catching up on her studies. If she was going to
get this extra time before exams, she might as well make the most of it, and the library had texts on every branch of medical science she'd ever studied, and a lot more.
Selecting a book on genetic reconstruction from the shelf, she settled into a chair to try and make sense of it. She'd nearly managed to begin to succeed, when the door creaked open, and she lowered the book just far enough to peek over the top of it, eyes wide.