On the gold-symbol world of Beresford's Planet, Richard Kirby lived in total luxury. As a member of "The Set" his life was a never ending round of planetary party-hopping. The only restriction imposed on him that he never put down any world marked with a red or black symbol was something that he always accepted without question.
That is, until his brother Alec was murdered in cold blood! Alec had been an undercover agent to those forbidden planets, and in order to avenge him, Kirby had to find out for himself what was really happening there.
But with the start of his investigation, Kirby found out quickly that the authorities meant business when they said, "Hands off!" The secret they were protecting was of vital importance, and it now became a matter of life and death, not only to Kirby, but to all of the inhabitants of the CHANGELING WORLDS. Now back in print, own this science fiction classic originally published by ACE Publications in a high quality hardcover edition.