In Private Killer, Frank and Joe continue their undercover investigation of Gamma Theta Theta, a mysterious-turned-dangerous fraternity at an all-boys New England boarding school. The headmaster's meddlesome, trouble-making daughter is in danger, and it seems like the fraternity members-and even some faculty-will stop at nothing to protect their secrets.

 

This is book 2 in Hardy Boys Undercover Brothers .

This book has been graded for interest at 8-12 years.

There are 160 pages in this book. This book was published 2010 by Simon & Schuster .

Franklin W. Dixon is the author of the ever-popular Hardy Boys books.