What alien force has invaded the town? Why is it watching barmaid Alison Cheney? And what plans does it have for the future of the planet Earth? The Doctor is helped (and hindered) by his new military liaison Major Kennet and his Royal Green Jacket troop. His old enemy the Master also plays a small part. During the course of this adventure he encounters a brand new race of ferocious alien monsters, and strikes up a friendship with his latest companion, Alison. This is the novelisation of BBCi's acclaimed Doctor Who adventure, first broadcast over the Internet in November 2003.