The Eye of the Ram(1997)
(The third book in the Hercules: The Legendary Journeys series)
A novel by Timothy Boggs
It is called the Theater of Fun. Run by Hercules's friend Slamoneus, the traveling troupe has dancing girls, jugglers, comedians, and a first-rate magician named Dragar. But Dragar is far more dangerous than anyone realizes. And Hercules is about to discover that there's a fine line between magic and sorcery.
Used availability for Timothy Boggs's The Eye of the Ram
1838 : UK Paperback
February 1997 : USA Mass Market Paperback
July 2015 : USA, Canada, UK Kindle edition