If Michael Jackson was still alive, he'd be midway through his 50- show concert extravaganza in London.
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."
Jackson recounted the details of the morning of June 25, before she learned that Michael had collapsed, and her world turned upside down.
"I was at my house in New York. You know, another day. Another morning. And I get a call ... [my assistant] said, 'Your brother's been taken to the hospital. It's on CNN right now,'" she told Roberts. "I called everyone's. There's a line busy or -- someone wasn't picking up. I spoke to mother. I spoke to Tito. I spoke to my nephew Austin. I spoke to my sister La Toya."
"I told them to call me when they got to the hospital. And I remember thinking nobody's calling me back, so I tried calling again, and that's how I found out that he was no longer ... I couldn't believe it," she said.
Jackson said the she and the entire family were in a state of disbelief.