The Doctor and Clara have to save a Viking village from space warriors from the future, the Mire. Without the villagers' best fighters, or the technology of the Mire, how can they win?

And why is the Doctor so interested in one Viking girl?

Pearson English Readers bring language learning to life through the joy of reading.

Well-written stories entertain us, make us think, and keep our interest page after page. Pearson English Readers offer teenage and adult learners a huge range of titles, all featuring carefully graded language to make them accessible to learners of all abilities.

Through the imagination of some of the world's greatest authors, the English language comes to life in pages of our Readers. Students have the pleasure and satisfaction of reading these stories in English, and at the same time develop a broader vocabulary, greater comprehension and reading fluency, improved grammar, and greater confidence and ability to express themselves.

Find out more at english.com/readers