Double Down (originally to be entitled Missing Double) is the second book in the Double Danger Trilogy and the 26th book in The Hardy Boys Undercover Brothers series. It was published on December 23, 2008 by Aladdin Paperbacks. ATAC BRIEFING FOR AGENTS FRANK AND JOE HARDY. MISSION: Continue working undercover as part of teen movie star Justin Carraway's entourage to find out more about the unsolved murder of celeb's least favorite Paparazzo and other mysterious happenings. LOCATION: Atlantic Cit
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