PLOTLINE - Concluded in FOREST OF THE DEAD - BIG SPOILERS AHEAD
One hundred years ago, the universe's greatest library was sealed off, leaving only one warning: "Count the shadows". But now, the shadows are moving again.
However, it now appears that the shadows are on the move again, the Doctor and Donna must uncover the terrible truth behind the Nodes and the horrifying Data Ghost, to find the library's secret.
EPISODE REVIEW - PENDING
In the meantime, I am sure I saw the TARDIS kitchen sink somewhere. SILENCE IN THE LIBRARY had everything in subtle and crafted measure. Extraordinary.
Surprises? Oh, yes. The girl and Dr Moon ("ship-in-a-bottle") relationship is intriguing. Professor River Song and the "diary book" is even more intriguing, and the "future" relationship with the Doctor. What's that all about?
Murray (Gold), there's something too intrusive about your music scores recently. Par everything down to a single instrument, perhaps.
Overall, an excellent set-up for a - hopefully - rewarding concluding episode.