On the planet Kregen that circles Antares, the brightest star of the Constellation of the Scorpion, two forces contend for the world's destiny.

The fifth book of the Dray Prescot series. Dray Prescot had fought long and hard through perilous lands to claim the hand of the heiress of the mighty Vallia. Yet, when finally he set foot in that long-sought empire, it was not as hero or noble... It was as an unknown, a mendicant, and finally as a condemned slave. For the combatant fates that had interfered continually with his quest on the planet of the twin suns of Antares had yet more tests for the man they had selected as their agent. But for Dray there was only one goal -- already in sight -- and he would not be turned aside any longer no matter what dangers Vallian intrigues and quasi-human mysteries may have in store for him. This edition contains maps and a glossary.

The sixth book of the Dray Prescot series. Would Dray Prescot be able to remain a prince of proud Vallia or become just another human victim of the hunters and manhounds of the mysterious Southern Continent? For that was the enigmatic fate that the Star Lords had suddenly confronted him with. They wanted someone freed from the terrified pack of human prey among whom Prescot found himself. But who it was and how it was to be done, they left to him to work out...

The seventh book of the Dray Prescot series.

Never a man to leave something half done, Dray Prescot knew his task on the mysterious continent of Havilfar was far from completed. There were cruel conquerors to be overthrown, there was pursuit of the manhounds and their masters, and there was the dreaded arena. Could he survive the life of a gladiator against the killers and monsters of a spoiled queen -- while the Star Lords waited for his mission to continue?

The eighth book of the Dray Prescot series. Dray Prescot, the Earthman who had been brought across interstellar space as the tool of the mysterious Star Lords, confronted his most baffling task while he was a hunted and harried wanderer of the continent of Havilfar. That task was to discover the means by which the aircraft of that continent's most advanced civilization operated. Prescot is no scientist, but fulfill his task he must or he would never return to the princess and homeland he had won. So, for Dray Prescot there was but one course -- with a whole continent against him, with time itself conspiring to balk him, the secrets of an unknown science must be made his...