Part 1 of 2, and will have me on edge for another week!
Silence in the Library, not so much an order but a statement.
The Doctor and Donna arrive on a planet that is the largest library in the universe, only there's no people taking advantage of it's facilities.
Also arriving are an expedition team, one of whom knows The Doctor from his future (that wibbly-wobbly-timey-wimey stuff again!). She, Professor River Song, called out to The Doctor on his psychic paper and keeps a book of memories, or "spoilers".
Also spiritually present is a young Earth girl, who sees the library in her dreams and has the task of saving the expedition, and The Doctor & Donna.
Finally, there's the Vashta Nerada. These are particles that live in the air and pounce in the dark. Hence the "count the shadows" warning. (Well, that's putting me off sleep tonight!)
We were left with two of the expedition down (Slightly dopey girl, and the ship's captain), and Donna supposedly safe but her face was appearing in an information point.
