Prince of Scorpio is a science fiction novel by British author Kenneth Bulmer, written under the pseudonym of Alan Burt Akers. It is the fifth book in his extensive Dray Prescot series of sword and planet novels, set on the fictional world of Kregen, a planet of the Antares star system in the constellation of Scorpio. It was first published by DAW Books in 1974. The Dray Prescot series is made of several cycles of novels, each cycle essentially forming a series within the series. In addition to being the fifth volume in the series as a whole, Prince of Scorpio is also the fifth and final volume in the Delian Cycle. It is set on the fictional island of Vallia.The 52 completed novels of the Dray Prescot series were written by Bulmer between 1972 and 1997, when a stroke stopped his writing, also the later Dray Prescot books, after 1988, were originally only published in German. The series is in the spirit of Edgar Rice Burroughs John Carter of Mars series. Source: Wikipedia (en)