Henry Bogget is an ordinary boy of just eight years old, and Henry has a secret. A secret that has been kept for many, many years. A secret about magic in London... In England, whenever someone changes the world and leaves their mark on history, a little round blue plaque is placed on the house where they once lived to make sure they can never be forgotten. With every discovery made, artwork painted or song written, a little trace of very powerful magic, an enchantment, is left behind. One night, not too long ago, Henry discovered this secret and his life changed forever. An adventure beyond his wildest dreams was about to begin.

Book 3 in the Christie and Agatha's Detective Agency series! 'The truth of the matter is that a number of valuable artefacts have been stolen. There is a thief at the dig!' During the excavation of an Egyptian pharaoh's tomb, Christie and Agatha find themselves at the heart of a mystery. Lord and Lady Carnarvon's dig is in jeopardy unless the thief at the site can be found. But time is quickly running out for the twins to wrap up the case and recover Tutankhamun's treasures. About the Christie and Agatha's Detective Agency series: It's not easy growing up in the 1920s. While Christie can usually be found up a tree or trying a spot of amateur engineering, her shy twin Agatha buries her nose in books and dreams of being a writer. The pair couldn't be more different. But when a scientific discovery goes missing, they find that together they make a winning combination and Christie and Agatha's Detective Agency is born. Join the twin detectives as they solve thrilling mysteries all over the world!