'Whitney' offers an unflinching look at Whitney Houston's triumphs and tragedies
Whitney Houston sings the National Anthem before the New York Giants take on the Buffalo Bills at Super Bowl XXV in 1991 in Tampa, Fla. (George Rose / Getty Images)

It was an exchange confirming years of speculation that the pop superstar had struggled with substance abuse, a dependency that ultimately contributed to her death at age 48 in 2012.

By the time the interview — the same one where she proclaims “crack is wack” — appears in “Whitney,” a new documentary on the late singer, the viewer had already seen enough of Houston’s downfall to know far more was at play with the singer than once believed.

Directed by Oscar-winning filmmaker Kevin Macdonald and given the blessing of the late singer’s estate, “Whitney” has already made headlines out of Cannes and will surely earn a place in the pop culture conversation this summer — it’s scheduled for a U.S. theatrical release on July 6 from Roadside Attractions — and beyond.

Both films trace the singer’s path to pop ubiquity from her youth amid the turmoil of Newark, N.J., in the 1970s and finding her voice in church under the tutelage of her mother, Cissy Houston.

Cissy, an extraordinary gospel singer who toured with Aretha Franklin, groomed her only daughter to sing “from her gut … and her heart,” which eventually caught the attention of producer Clive Davis, who signed a teenage Houston and launched her to stardom in the late ’80s, and remained a key fixture in her career until the end.

We know the story from there: Girl meets bad boy (R&B heartthrob Bobby Brown) and continues to reach dizzying heights of pop and Hollywood fame, until her once incandescent presence and goosebump-inducing voice begin succumbing to a cocaine addiction that unravels her in front of the world, turning…