Prince Andrew is being haunted over his close ties with Jeffrey Epstein, with an explosive documentary airing in the UK Monday night — including claims the pair had an orgy with nine young girls on the pedophile’s private island.

While the royal long dubbed “Randy Andy” has strenuously denied being involved in his friend’s sex ring, the salacious details already leaking from “The Prince and the Pedophile” have only intensified the spotlight on the friendship that Andrew has admitted was a “mistake and an error.”

The special by Channel 4’s “Dispatches” is taking a deep dive into the pair’s close ties — including the claims in 2015 court papers that they had group sex on Epstein’s so-called “orgy island” of Little St James, according to the Times of London.

“The third time I had sex with Andy was in an orgy on Epstein’s private island in the US Virgin Islands. I was around 18 at the time,” longtime accuser Virginia Roberts Giuffre wrote in the Florida court docs.

“Epstein, Andy, approximately eight other young girls and I had sex together. The other girls all seemed and appeared to be under the age of 18 and didn’t really speak English.

“Epstein laughed about the fact they couldn’t really communicate, saying that they are the ‘easiest’ girls to get along with,” claimed Giuffre.

Roberts has long claimed that Epstein forced her into having sex with “powerful men, including politicians and business executives.”

At the same time she alleged her royal orgy, she also claimed former President Bill Clinton had visited Epstein’s island in 2002 — though she made it clear she never had sex with him or saw him having sex with others.

“Dispatches” will prove Andrew met Epstein at least 10 times during their 12-year friendship and the royal sometimes stayed with him for several days, according to the Times.

They were so close, the perverted moneyman had 13 different numbers for Andrew, private investigator Mike Fisten claims.

Epstein — who hanged himself in a Manhattan lockup this summer — saw Andrew as his ultimate “trophy” among a collection of important people, socialite Lady Victoria Hervey reportedly told the doc.

“Dispatches” also obtained medical records that appear to support her claims of abuse — with her suffering three weeks of vaginal bleeding in 2001, the Times of London said.

“Without going into the details of the sexual activities I was forced to endure, there were times when I was physically abused to the point that I remember fearfully thinking that I didn’t know whether I was going to survive,” she wrote in a separate legal declaration from 2015, according to the paper.

Andrew has denied the “abhorrent” claims against him — and insisted he had no idea about his friend’s sick secret life.

“At no stage during the limited time I spent with him did I see, witness or suspect any behavior of the sort that subsequently led to his arrest and conviction,” he has said.

Buckingham Palace has also said that “any suggestion of impropriety with underage minors is categorically untrue.”