A fossil has been discovered and they're saying it could prove Dr Durant's heretical theory of evolution - but no-one's allowed to see it. When Adam, who can remember nothing before his twelfth birthday, breaks into the cave, he discovers something that could literally change the world. It might be evolution in action but only if it's being run by someone who doesn't understand it properly. Meanwhile, a mutilated corpse sets Sergeant Hammett on the trail of a victim who may never have existed. At least, not until people noticed. Oh, and there's the strange burglar who breaks in to mend people's clocks. And far across the Empire, a mysterious catlike beast has been killing the sheep. And has started working its way through the people. The answers are in the monastery library but some of the books are very disturbing. It's a tale of greenfly, witch-finders, silly wigs and were-rabbits. Just don't ask about the bellybutton fluff.