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The X Factor is the final book in the Galaxy X Trilogy and 30th overall in The Hardy Boys Undercover Brothers series. It was published in September 2009 by Simon & Schuster.

Back cover summary[]

ATAC BRIEFING FOR AGENTS FRANK AND JOE HARDY. MISSION: To find out who is responsible for Bret Johnston's death, and save Galaxy X from another tragedy.

LOCATION: Galaxy X, a new theme park in California.

;;POTENTIAL VICTIMS: Any number of A-list celebs invited to the grand opening of the park.

SUSPECTS':' Tyrone McKenzie and his family seem to make enemies by the second. But is it a new enemy that wants to keep the park shut down? Or someone from the McKenzie family's past who has suddenly resurfaced...?

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Plot summary[]

to be added.

Appearances[]

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Characters[]

Locations[]

Galaxy X

Businesses and organizations[]

References[]


External links[]

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