Transcriber's Notes: 1. Page scan source: Google Books https://books.google.com/books?id=wdoWAAAAYAAJ (Harvard University) THE SECRET PASSAGE _The Albany Evening Journal_ says: "Fully as interesting as his former books, and keeps one guessing to the end. The story begins with the murder of an old lady, with no apparent cause for the crime, and in unraveling the mystery the author is very clever in hiding the real criminal. A pleasing romance runs through the book, which adds to the interest."…
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