On the planet Kregen that circles Antares, the brightest star of the Constellation of the Scorpion, two forces contend for the world's destiny. One of them, the Savanti, called in a human pawn from far-away Earth.His name is Dray Prescot, and only the Savanti know his role.Dray Prescot confronted a fabulous world -- barbaric, unmapped, peopled with both human and non-human races. But there were always the Star Lords to watch and check the Savanti's plans. And it soon turned out that Dray Prescot himself had to make a decision that would change him from a mere pawn to a bolder piece on the planetary chessboard...
transit to scorpio
I first read this in1975 and its still one of the best series i've ever read. action, adventure and great story telling