After reading reviews I was a bit apprehensive about this, but I was pleasantly surprised. The first three quarters build up nicely, with an English village with toffs, madmen, restoration committees, family feuds and battered landrovers, together with some mysterious goings on in a tunnel and legends around the well. The characters are few, varied and interesting and the mystery about the inevitable monster builds nicely. Once the monster is revealed it goes into more usual territory for this series of running away, then confronting and attempts to outwit. Some of the better points form earlier, such as the developing relationships, get abandoned in the action. This is disappointing but I rather liked the monster. It is proper alien in looks, attitude and habits, and you don't even get to see all of it. The physics involved in the transmutation were a bit outlandish, but overall the book is one of the better ones in the series.