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Violin prodigy Katya Tsukanova 17 found dead at millionaire father's home after 'Calvin Klein' drugs | Daily Mail Online
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What is the 'Calvin Klein' drug craze that killed 17-year-old violin prodigy Katya Tsukanova? | Metro News
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How student dealers are making £4,000 a week from selling 'Calvin Klein' drug cocktail | Daily Mail Online
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