Doctor Who Books: BBC New Series Books

On every planet there is a winter...

When the TARDIS makes a disastrous landing in the swamps of the planet Sunday, the Doctor has no choice but to abandon Martha and try to find help. But the tranquillity of Sunday's swamps is deceptive, and even the TARDIS can't protect Martha forever.

The old village well is just a curiosity - something to attract tourists intrigued by stories of lost treasure, or visitors just making a wish. Unless something alien and terrifying could be lurking inside the well. Something utterly monstrous that causes nothing but death and destruction.