Books like A Formidable Enemy by Mabel Esther Allan
While spending her Easter vacation in Edinburgh, 18‑year‑old Isobel meets an American girl who introduces her to a world of intrigue. Their friendship pulls Isobel into a dangerous adventure involving foreign spies and a looming murder.
First publish date: 1973
Genre: Children's Fiction/Children's Adventure
Authors: Mabel Esther Allan
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Some Other Similar Books
The Mystery of the Ivory Charm by Enid BlytonThe Secret of the Hidden Tree by Mabel Esther Allan
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