Janet Jackson Says Dr. Conrad Murray Should Not Be Allowed to Practice Medicine Again

Nov. 17, 2009— -- If Michael Jackson was still alive, he'd be midway through his 50- show concert extravaganza in London.

It's a future that would have played out if not t for Dr. Conrad Murray, Janet Jackson told ABC News' Robin Roberts in an exclusive interview that airs Wednesday, Nov. 18, at 10 p.m. ET.

And Jackson's sister said she wants to see to it that Murray is never allowed to practice medicine again.

"Not at all," she said. "So this could happen to someone else? Another family?"

Sources have told ABC News that there would not be an indictment or arrest in the Jackson case until the new year.

Janet Jackson said she does not know whether anyone besides Murray was involved in her brother's death.

"If there are, then the truth prevails," she said. "That's the way that I see it."

Watch Robin Robert's exclusive interview with Janet Jackson, "In the Spotlight," Wednesday, Nov. 18 at 10 p.m. ET

Toxicology results have showed that Jackson had lethal amounts of propofol -- a powerful sedative typically used in operating rooms -- in his system when he died, along with a cocktail of other prescriptions. His death was ruled a homicide.

Murray has admitted to administering the anesthetic propofol but has denied giving Michael anything that should have killed him.

"He was the one that was administering," Janet Jackson said. "I think he is responsible."

Murray is still under investigation in Los Angeles. The District Attorney's office has yet to announce any charges against him in Jackson's death, but on Monday, Murray appeared in court on charges that he owes more than $14,000 in child support.

Murray agreed to start making payments to avoid jail time but claimed he had to close his practice because of threats he received after Jackson died.

"When you're under a cloud of suspicion involving the death of a megastar, who is going to hire you?" Legal analyst Dana Cole told "Good Morning America."

And TMZ reported today that Murray is preparing to go after concert promoter AEG for $30,000 in missed payments for medical treatment and services he provided to Jackson.

Janet Jackson has walled herself in silence and has fiercely guarding her private thoughts about the death of her beloved brother.

"It's been a tough year," she said. "You have your days where it's just really -- it's hard to believe. And a day doesn't go by that I don't think about him."