The Doctor and Clara, with their friend Rigsy, find themselves in an alien world, on a street hidden in the heart of London. Inside there are some of the most frightening beings imaginable, and Ashildr! The visitors are faced with a death sentence. They won't all get out alive. About the series 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.