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HARPERCOLLINS
Publishing great authors since 1817, HarperCollins is the second-largest consumer book publisher in the world. With 200 years of history and more than 120 branded imprints around the world with strengths in literary and commercial fiction, business books, children’s books, cookbooks, and mystery, romance, reference, religious, and spiritual books, HarperCollins publishes approximately 10,000 new books every year.
USBORNE
Usborne is one of the world’s leading independent book publishers. We are proud to be a family business that aims to create brilliant books for children of all ages.
Shop Brand CatalogPick-your-own-path and puzzle-packed mystery collide in the first book in Lauren Magaziner’s new hilarious and high-stakes middle grade series, now in paperback! The reader must help Carlos and his friends put together the clues to save his mom’s detective agency.
Have questions about “Case Closed #1: Mystery in the Mansion”?
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