Tight, flat, square, sharp books with creased spines, light edge wear and toning. 

They took the body of Park Lacoch and stripped away his mind. Then they stuck him aboard a spaceship and exiled him to Charon, from which no return was possible. And just when he thought things couldn't get any worse, Park found himself transformed into a changeling -- a half-beast, half-man, with the beast rapidly gaining ascendancy . . .

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The Confederacy's grand scheme seemed to be working. They had substituted the mind of their best operator for the minds of four criminals - every one a top assassin - and sent one to each of the four Warden worlds to eliminate the resident Lord there. The agents on Lilith, Cerberus, and Charon had already reported in - success! Now only Taran Bul's mission on Medusa remained.

On this frozen ice world, Bul quickly joined an on-going conspiracy determined to overthrow the hated dictator Lord Talant Ypsir - the rebel's mission suited his perfectly. But a combination of alien menace and Ypsir's secret power proved too much for Bul. At last, the operator over all - the Agent With No Name - had to prove his ability...with everything stacked against him!

In this volume of his most gripping series, Jack Chalker brings to a grand conclusion the epic confrontation between the mighty confederacy and the small but powerful worlds of the Warden Diamond