649 books • 49 series
The Secret of the Knight's Sword (Nancy Drew & the Hardy Boys Be a Detective Mystery Stories, #1) (Be a detective mystery stories)
Danger on Ice (Nancy Drew & the Hardy Boys Be a Detective Mystery Stories, #2) (Nancy Drew & The Hardy Boys, #2) (Be a detective mystery stories)
Tic-Tac-Terror (The Hardy boys mysteries, #72) (Hardy Boys, #74) (Touchstone Books (Paperback), #74)