When CIA operative Miles Kendig deliberately lets KGB agent Yaskov get away, his boss threatens to retire him. Kendig beats him to it, however, destroying his own records and traveling to Austria where he begins work on a memoir that will expose all his former agency's covert practices. The CIA catches wind of the book and sends other agents after him, initiating a frenetic game of cat and mouse that spans the globe.
In the early 20th century a village experienced a series of inexplicable murders. All the victims were young men who had been turned to stone. The perpetrator of these deaths was a being so repulsive that she transformed the onlooker using the power of her deadly stare. Much of the time the creature took the form of a beautiful and seductive woman, but during periods of the full moon she becomes a living horror, vicious and deadly. A professor has come to investigate the deaths, bringing with him his beautiful assistant whose knowledge of the Gorgon is more intimate than anyone would ever realise.