E.C. Tubb 
Genetic Buccaneer [EPUB ebook] 
Cap Kennedy Book 12

THE HAND OF DR KAIFENGBy tampering with the genes of humanity to create a super-race – that was the ideal of many scientific Utopians.By tampering with the genes of humanity to create a super-army – that was a dream of many military commanders.By tampering with the genes of humanity to create a horde of obedient but brilliant monsters – that was the scheme of Dr. Kaifeng.For Cap Kennedy, the abduction of a dozen leading geneticists spelled trouble for Earth. For their trails led not to some idealist, or to some would-be Napoleon, but pointed only at the one man in the galaxy who might prove to be more powerful than the legions of Terra themselves.