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I read the books "Pardus".It is very interesting.It tells about a boy Nikita Legostaeva.He gets to the lab,and they make from it human mutant.But he is still on the good side.But not telling parents that is a Panther.Later he falls in love with Xenia Voropayeva,who is indefferent  to him.And a falls in love Tessa.In the end,he stays with Tessa.