Undercover Brothers
detective fiction series of books

The Hardy Boys: Undercover Brothers is a detective fiction series of books published by Aladdin Paperbacks (an imprint of Simon & Schuster), which replaced The Hardy Boys Digest paperbacks in early 2005. All the books in the series have been written under the pen name of Franklin W. Dixon.
Series background
The Undercover Brothers is about two teenage brother detectives, Frank and Joe Hardy, who are the sons of world-famous PI Fenton Hardy. Although there are many similarities in this series to the previous Hardy Boys series, there are also many changes, for example:
The Hardy boys are undercover agents for American Teens Against Crime (ATAC), a top-secret government organization, co-founded by their father, and are solving more realistic and violent crimes. Since it is a top-secret organization, Frank and Joe often need to make up excuses to convince their mother and aunt to let them go to places.
The books in this series are written in a first-person narrative style with Frank and Joe alternating chapters and often interrupting each other.
The Hardy boys' aunt's name is shortened from Gertrude to Trudy. It is revealed in Hurricane Joe why she shortened her name to Trudy. This version is much younger than the character in other Hardy Boys series.
The Hardy boys' long-time girlfriends, Callie Shaw and Iola Morton, appear in the books, but only as platonic friends of the boys instead of love interests.
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This entry incorporates text from “Undercover Brothers” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.