A frightened young maid disappears from Ben's Uncle Hiram's house where the boys are visiting, and Ben and Zack jump at the chance to unravel the mystery. Soon they discover that she is being blackmailed by a gang of rough boys called the Plus Uglies, who are holding her little brother captive.
- ISBN10 0801089166
- ISBN13 9780801089169
- Publish Date 1 January 2008
- Publish Status Active
- Out of Print 8 June 2011
- Publish Country US
- Publisher Baker Publishing Group
- Imprint Baker Books, a division of Baker Publishing Group
- Format Paperback
- Pages 158
- Language English