The Insider.com

The June issue of Vanity Fair profiles Whitney Houston's final days, including the fact that the late icon was all set to make a big-screen comeback with her film Sparkle opposite Jordin Sparks.

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According to Sparkle director Salim Akil, Whitney's performance is "profound." It also includes a now tragic line.

"There's a line in the movie where she says, 'Hasn't my life been enough of a cautionary tale?' All the questions that you ask people as you do this story, I feel she answers in this movie.… The answer is: 'All the good things, all the beautiful things, that you ever thought about me are true.' Nobody is going to be able to say anything more profound than what Whitney says herself on that screen," he tells the magazine.

Related: First Look -- Watch Whitney 'Sparkle'

He also calls her last film appearance a "gift."

"Her performance is consistent with the gifts that she gave us consistently," he says. "Isn't that enough?"

Video: Whitney Dishes Big-Screen Comeback

Check out the film trailer's above, where Whitney plays an ex professional singer cautious of her three daughters' blossoming Motown career. Sparkle hits theaters August 17.