Behind Mary-Kate’s silence

New York police interviewed the masseuse who found HEATH LEDGER's lifeless body. They interviewed his ex-fiancée, MICHELLE WILLIAMS. They even interviewed his ex-girlfriend, HELENA CHRISTENSEN. But the girl who masseuse DIANA WOLOZIN called three times before finally calling 911, has apparently refused point blank to discuss anything with the police.

Ahlan! goes behind MARY-KATE OLSEN's wall of silence, to find out what she's hiding...

Whose prescription drugs were they?
The main thing the police seemed to wish to talk to Mary-Kate about were the powerful painkillers, OxyContin and Vicodin, which were found in Heath's system, but for which he had no prescription.

Olsen's rep insisted that the actress "had nothing to do" with the prescription drugs and claimed she had provided "relevant information" to the investigation.

"Despite tabloid speculation, Mary-Kate Olsen had nothing whatsoever to do with the drugs found in Heath Ledger's home or his body, and she does not know where he obtained them," snapped her attorney.

Demanded immunity
The 22-year-old billionairess is said to have refused to talk to police ever since Heath's body was found on January 22, this year. Her silence meant that the US Attorney's office went to the extremes of subpoenaing the actress - literally, forcing her - to testify. But MK's super-expensive legal team insisted that she receive immunity from prosecution before she told them anything, with sources revealing that her lawyers had been negotiating with the authorities for months about what she might or might not say.

"[Mary-Kate] has refused to speak," reported the New York Post. "Unless she gets immunity, exercising her constitutional rights."

‘Everyone helped... but Mary-Kate"
Having "declined to comment" in the wake of Heath's death, the actress has remained resolutely silent about the calls made to her by Diana Wolozin.

"Everyone has been very eager to help... everyone except Mary-Kate," said a NY Post source. Adding that she has "repeatedly rebuffed attempts" by investigators to question her.

‘Secret records'
Before calling 911, Wolozin called Mary-Kate three times, which resulted in her sending her bodyguards to Heath's apartment - they arrived four minutes before paramedics.

Wolozin told the Drug Enforcement Administration agents that she called Mary-Kate because "it was the right thing to do", and although the twin's phone records were requested, the source said they haven't been handed over.

Case closed, questions unanswered
Anyone who was hoping to get to the bottom of the Mary-Kate mystery will be unable to, after the investigation into what was termed Heath's "accidental overdose" was closed, meaning that the subpoena issued against the actress will never be enforced.

And, a source close to the investigation revealed that the questions concerning the prescription drug, OxyContin, and how Heath got hold of it, will not never be known -

"Did it come from a dealer, from a friend? If he had a bottle from a friend, was it taken by someone else before police responded? That is what is trying to be determined."

But now never will...

J-Lo's off the hook too!
Almost eight years after she was caught up in a New York club shooting with her then-boyfriend, P DIDDY, J-LO has finally learnt that she won't have to testify in the lawsuit.

Jennifer spent a night in a police cell after the shooting, with on-duty cop, DERRICK PARKER, revealing, "J-Lo was crying and upset... her arms had been locked upright in an uncomfortable position for at least an hour... (She was) breaking down,"

While the new mum was subpoenaed in June, the order was cancelled last week.