Letters Column: Take That, You Hideous Magician, You!
Rock musician Jim Rook and his fiancée Janet Jones are summoned to the dimension Myrra, where Jim is to carry out his ancestor's legacy as Nightmaster and stop the reign of the evil warlocks. Adding incentive, the warlocks capture Jan. Without a choice, Jim sets out with his companion Boz to free Myrra and save Jan!
According to house ads, it went on sale March 13, 1969.