Double Down by Franklin W. Dixon is a young-adult crime/detective-mystery novel. Originally released in 200#, it is the 2nd book in the Double Danger Trilogy story arc, which is listed as 26th book in The Hardy Boys: Undercover Brothers series. The series follow the thrilling adventures and missions of Frank and Joe Hardy, teenage detective brothers.
You can find the other books in The Hardy Boys: Undercover Brothers here.
- Title: Double Down (Hardy Boys: Undercover Brothers 26)
- Author: Franklin W. Dixon
- Publisher: Aladdin
- Date Published: December 23, 2008
- Language: English
- ISBN-10: 1416974466
- ISBN-13: 9781416974468
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