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'You know, this looks exactly like the sort of place where a mystery might happen!'There are many places the twins would rather be than stuck on a spiritualist retreat. But things become interesting when famous escape-artist Harry Houdini shows up on the island to expose the money-grabbing spiritualists. However, when he disappears without a trace, it soon becomes clear that it's not of his own doing - he's been kidnapped! It's up to Christie and Agatha to help him in his most daring escape yet. 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!