651 books • 49 series
The Walking Snowman (Hardy Boys Clues Bros., #10) (Hardy Boys Are: The Clues Brothers, #10)
The Pumped-Up Pizza Problem (Hardy Boys Clues Bros., #9) (Hardy Boys Are: The Clues Brothers, #9)
The Doggone Detectives (Hardy Boys Clues Bros., #8) (Hardy Boys Are: The Clues Brothers, #8)
The Abracadabra Case (Hardy Boys Clues Bros., #7) (Hardy Boys Are: The Clues Brothers, #7)
Who Took the Book? (Hardy Boys Clues Bros., #6) (Hardy Boys Are: The Clues Brothers, #6)
Dinosaur Disaster (Hardy Boys Clues Bros., #5) (Clues Brothers S., #5) (Hardy Boys Are: The Clues Brothers, #5)
Jump Shot Detectives (Hardy Boys Are: The Clues Brothers, #4) (Clues Brothers S., #4) (Hardy Boys Clues Bros., #4)
First Day, Worst Day (Hardy Boys Are: The Clues Brothers, #3) (Clues Brothers S., #3) (Hardy Boys Clues Bros., #3)