Franklin W. Dixon
Book 129 of The Hardy Boys Mystery Stories
Language: English
Goodreads ISBN
Age Range 1 Younger Audience
Frank and Joe are in Hawaii at a dolphin research center, where they discover that one of the dolphins has suffered a suspicious injury and one of the researchers has vanished.
Description:
Frank and Joe are in Hawaii at a dolphin research center, where they discover that one of the dolphins has suffered a suspicious injury and one of the researchers has vanished.