Whitney Houston

As her career spiraled out of control, WHITNEY HOUSTON spent days locked in her bedroom amid piles of garbage smok­ing crack.

When she got high, she imagined the devil was beat­ing her, but she was actually punching herself black and blue with her own fists.

And her beautiful singing voice, ravaged by drugs, was gone.

In an ENQUIRER world exclusive, Tina Brown, the sister of Whitney’s ex-hus­band Bobby Brown, opened the window wide into the nightmarish drug-addled life of the fallen diva, who is now in God’s arms.

“I did crack with Whitney,” said Tina, a recovering ad­dict herself.

Her heartbreaking memo­ries of the beautiful star who once had the world in her hands are one shocking rev­elation after another.

There were the days that Whitney disappeared to languish in dangerous drug dens.

There was the failed at­tempt at an intervention by Whitney’s family when a cursing Whitney nearly leaped from a second-story window trying to escape.

And there were the drug-induced delusions Whitney had of hidden surveillance cameras watching her every move.

Tina’s drug partner days with Whitney occurred when the singer and Bobby Brown lived in the posh Country Club of the South in Alpharetta, Ga., and she remembers the day she and her sister-in-law first got high.

In her own words Tina explained: “It was Feb. 21, 2004. The reason why I know this date is because Feb. 20 is my birthday.”

“We was drinking a lot,” said Tina.

“I passed out on the couch but I wake up about six in the morning. I went into Whit­ney’s bedroom. All Whitney was wearing was her mink coat and a pair of furry boots, her usual garb.”

Whitney suggested they call dealers. “Call them,” Tina said.

What followed was a re­lationship forged by drugs. Although Tina had known Whitney since her marriage to her brother in 1992, she’d never gotten close to her until that day.

“Hey, I was using and she was paying. It was free,” said Tina.

That first drug binge went on for roughly 24 days in Whitney’s home. Bobby Brown, no stranger to drugs himself, was serving 60 days in jail at the time for a probation violation on a drunk-driving conviction.

Dealers came and went, delivering marijuana, pow­der cocaine and crack. And it was during this time that Tina started to realize what drugs had done to Whitney Houston.

“She saw demons when she got high,” said Tina

“She’d point to the floor and say, ‘See that demon. I’m telling you somebody’s messing with Bobby.’ ”

One day a stoned Whitney called Tina over to a sink. “A dish had broken and in the cracks of the plate, she saw a pair of smiling lips,” said Tina.

When Whitney got high, she would imagine concealed wires and spy cameras were everywhere.

“She would get a screw­driver and take things apart to find the cameras,” said Tina.

In mid-March, Whitney’s mother Cissy Houston, who’d attempted many times  to free her daughter from the grip of drugs, knew it was time to try again.

When Cissy and other fam­ily members arrived at the home, Tina was sweeping the foyer while Whitney was in her upstairs bedroom, getting high.

“I opened the door and the cars pull up, black cars. The driver gets out and opens the door for Cissy. Then, here comes Gary, Whitney’s broth­er.”

Tina tried to close the door. She yelled up to Whitney, using the singer’s shortened nickname, Nip.

“I yelled, ‘Nip they’re down here.’ ”

“Don’t let them in,” Whitney screamed.

It was too late.

“I did not want them to see what she’d be doing up there but her mother came up there and she seen it. And it’s a disas­ter, paraphernalia everywhere.”

Tina said Cissy gave Whitney an ultimatum. Get into rehab or she was going to take her daughter Bobbi Kristina away from her or have her locked up.

Tina could hear Whitney cursing at her mom as securi­ty gathered up Bobbi Kristina and put her in a car. Tina got into another. They were to be taken to a nearby hotel.

That’s when all hell broke loose as a stoned-out Whitney made a desperate bid to escape the intervention.

“Whitney tried to jump out the window, her bedroom win­dow on the second floor,” said Tina. “She has her white bag and one of her legs over the window.

“She’s screaming, ‘Tina, don’t you leave me. Catch my bag.’

“I said, ‘Nip, don’t jump. Come on, there’s nowhere you can go.’ ”