Investigating a series of strange events, the Brigadier pulls out a long unused device which sends a signal to the Doctor - in this case, in his sixth incarnation. What is the mystery that unites a spaceship shot down over England in 1944, strange demonic figures hidden in the shadows, and the final fate of Adolph Hitler?
Apparently written in three weeks when another book became unavoidably delayed, this book unites the current and previous editors of BBC's Doctor Who line of novels in a surprisingly well thought-through that combines fact and fiction into a coherent whole, while containing several plot twists that you probably won't see coming.
There is something about British writers which results in Hitler being portrayed as something more than just an evil dictator - and this book is no different. The combination of extreme disgust and morbid fascination adds some fuel to the already volatile mixture.
For a book of its pedigree (which would be a hastily bred mongrel), this is surprisingly good.