181 pages
English language
Published Jan. 1, 1974 by Grosset & Dunlap.
The Thirteenth Pearl/ Mystery Of Crocodile Island/ The Strange Messgae in the Parchment/ The Sky Phantom/ The Secret of the Forgotten City/ Mystery Of the Glowing Eye
A fiery glowing eye in a museum, the abduction of Ned, the code name Cyclops, and a pilotless helicopter draw Nancy and her friends into a dangerous investigation.
Subjects
- Mystery and detective stories