The Vengeance of Hera(1997)
(The second book in the Hercules series)
A novel by John Gregory Betancourt
The Isle of Thera is plagued by a man-eating Cyclops who demands a terrible tribute from the terrorized citizens: six of their sons and six of their daughters must be sacrificed to appease the giant's hunger. Hercules dares to challenge the Cyclops, but their epic battle is only the beginning of his troubles, for Hera, the vengeful Queen of the Gods, has her own plot to destroy Hercules!
Used availability for John Gregory Betancourt's The Vengeance of Hera
July 1997 : USA Paperback
October 2013 : USA, Canada, UK Kindle edition