Adrian McManus, Michael Jackson's former housekeeper at Neverland Ranch, told Inside Edition in an interview that aired Friday that she believes her boss committed child molestation and that Jackson also threatened her.

McManus told the television news magazine that the King of Pop said to her, "whatever happens in Neverland stays in Neverland."

She claims she was warned by a Jackson employee to never reveal what she saw. McManus revealed the employee allegedly said to her:

"'If you ever go on a talk show or a TV show, we can hire a hit man, have your neck slit. They'll never find your body. We can hire a sniper to take you out."

McManus started working for Jackson in 2003, just before allegations surfaced.

She testified against him in his 2005 trial on charges he gave a teenager alcohol and then sexually molested him. Jackson was found not guilty, but McManus did not agree with the verdict. On the witness stand, McManus claimed she saw Jackson fondle actor Macauley Culkin. Culkin called her a disgruntled employee and denied the allegations.

McManus said she saw the singer acting inappropriately with young boys. She told Edition that she saw boys lying in bed with Jackson in his room. She also claims she saw Jackson and boys sitting in the Jacuzzi in Jackson's bedroom, with his and their underwear floating in the water.

McManus' 2005 testimony will play a role in Wade Robson's case against Jackson, TMZ reported.

Robson is suing Jackson's estate for "childhood sexual abuse."

Robson, a choreographer and dancer, has worked with top names in pop music including Britney Spears, *NSYNC, Usher and P!nk. He has also appeared on So You Think You Can Dance.

In 2005, Wade, now 30-years-old, testified in MJ's molestation trial and DENIED Michael ever molested him.

Wade met Michael when he was 5 years old.  By the time Wade was 7, he went for sleepovers at Neverland and Jackson's homes in Los Angeles and Las Vegas.  The sleepovers continued until Wade was 14.