She had the voice, the looks and the charisma, but by the time of her death, drug addiction had robbed Whitney Houston of everything she had. The superstar's £76million fortune was gone and her debts ...

So now we know, thanks to Oprah: Crack remained wack, as far as Whitney Houston was concerned. But marijuana laced with cocaine—the better to "level things off”—now that was a different story. Whitney ...