The Phantom and the Scorpia Menace(1972)
(The third book in the Story of the Phantom series)
A novel by Lee Falk
Diana Palmer, the Phantom's famed and beautiful sweetheart innocently falls into the web of Scorpia - A mysterious, hidden, world wide crime ring that began as a pirate band 400 years ago. Thru the centuries, Scorpia has fought an eternal nemesis - the Legendary Phantom. Once More the ancient battle is fought as the Phantom attacks the sinister force to save his lovely Diana.
Used availability for Lee Falk's The Phantom and the Scorpia Menace