In this Doctor Who adventure, terrible tiny creatures swarm down from the sky, intent on destroying everything on planet Xirrinda. As the colonists try to fight the alien infestation, the Doctor searches for the ancient secret weapon of the native Ulla people. Is it enough to save the day?
- ISBN10 1405926309
- ISBN13 9781405926300
- Publish Date 4 February 2016
- Publish Status Active
- Publish Country GB
- Publisher Penguin Random House Children's UK
- Imprint BBC Children's Books
- Edition Digital original
- Format eBook (EPUB)
- Pages 160
- Language English