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Cover of The Secret of the Old Mill, Learn Spanish · English alongside
Bilingual edition · finished · Kindle listing pending

The Secret of the Old Mill

Franklin W. Dixon · 1927

about 41,000 words · CEFR B1–B2

Collections: Mystery & detective, Children's classics

Part of the The Hardy Boys series · #3 · 5 titles in the catalog. Previous: The House on the Cliff. Next: The Mystery of Cabin Island.

A complete bilingual edition set paragraph by paragraph: each translated paragraph sits directly beside the original, with fifteen to twenty vocabulary notes per chapter and a language tag on every paragraph so the Kindle dictionary switches automatically. Built for upper-intermediate and advanced readers (CEFR B2 to C1). Available in Spanish, German, French, Italian, Japanese, Finnish, Swedish, or Brazilian Portuguese with English.

For English speakers learning…

English editions, for speakers of…

How to read the codes: ES · EN is the Spanish text with the English alongside, for learners of Spanish; EN · ES is the mirror, for learners of English. Every edition is finished; those marked pending are waiting for their Kindle listing — ask to be told when one is published. Samples open the first chapter in the browser, exactly as it appears on Kindle. More about the format →