The Crawling Terror

"Well, I doubt you'll ever see a bigger insect."

>But it isn't the dead man cocooned inside a huge mass of web that worries the Doctor. It isn't the swarming, mutated insects that make him nervous. It isn't an old man's garbled memories of past dangers that intrigue him.

With the village cut off from the outside world, and the insects becoming more and more dangerous, the Doctor knows that no one is safe. Not unless he can decode the strange symbols engraved on an ancient stone circle, and unravel a mystery dating back to the Second World War.