The Hardy Boys: Undercover Brothers: ATAC Encyclopedia
Welcome to the Hardy Boys Undercover Brothers ATAC Encyclopedia. It is in this section where you can find lists of each series of books as well as information on each character, location, business, organization, and suspect found in the various Undercover Brothers series. If you are not sure where to start, you can always just do a quick search via the form on the right.
This is the main series of books in the Undercover Brothers canon. Every other series in the ATAC Encyclopedia is based upon this series by Aladdin Paperbacks a division of Simon & Schuster.
These are the graphic novels produced by Papercutz that tell additional tales of the Undercover Brothers but in picture format. If you are into comics and the Hardy Boys, then you should check these out.