HBO/Channel 4 production features the testimonies of two men who allege the singer sexually abused them as children

It’s a documentary Michael Jackson’s estate doesn’t want you to see. But despite legal threats, HBO and Channel 4 will air Leaving Neverland next month.

A new trailer offers a first look at the troubling two-part, four-hour film that premiered at Sundance film festival last month, featuring the testimonies of James Safechuck and Wade Robson, who allege that Jackson sexually abused them as children.

'Secrets will eat you up' – inside the shocking Michael Jackson documentary Read more

“He told me if they ever found out what we were doing, he and I would go to jail,” says Robson in the trailer.

The film shocked critics and audiences when it was shown at Sundance. Variety’s Owen Gleiberman called it “devastating” and the Hollywood Reporter’s Daniel Fienberg praised it as “complicated and heartbreaking”.

Play Video 0:41 Watch the trailer for Leaving Neverland: Michael Jackson and Me – video

“This is not a movie about Michael Jackson,” said director Dan Reed to Variety. “This is not a movie about Michael Jackson abusing little boys. It’s a movie about two families and how two families came to terms with what their sons revealed to them many years after Jackson died.”

Jackson’s estate has already criticised the film in a 10-page letter addressed to HBO’s CEO. It denied the allegations and condemned director Dan Reed for not speaking to anyone in Jackson’s family or legal team. Since the film premiered, some Jackson fans have attacked the director and the two accusers.

“There is also this league of fans who are almost like a cult, and they say very nasty things [about the film] on social media,” Reed said to Vice. “And their words echo the two-decade-long rhetoric of the Jackson family and legal team, which is shaming the victims. It happens often in these cases. It’s what they do very aggressively and relentlessly, and I don’t think you can get away with that in 2019 like you could in the past.”

Timeline Michael Jackson child sexual abuse claims Show Hide LAPD investigation After Jordan Chandler makes allegations during a police interview that Jackson has abused him, an investigation begins. Jackson had met the 12-year-old boy the previous year. Barnes and Robson press conference Teenagers Brett Barnes and Wade Robson hold a press conference stating that they had shared a bed with Jackson on multiple occasions, but that nothing sexual had happened. Chandlers sue Jackson A lawsuit from the Chandler family alleges sexual abuse by Jackson and seeks $30m. Jackson video statement Jackson describes being strip-searched and photographed by the LAPD two days earlier as “the most humiliating ordeal of my life”. He states: "I am not guilty of these allegations, but if I am guilty of anything it is of giving all that I have to give to help children all over the world.” Jackson settles lawsuit Jackson settles out of court with the Chandlers for $22m – $15m goes to Jordan Chandler to be held in a trust fund until he turns 18. LAPD investigation fails After two grand juries fail to indict, and Jordan Chandler tells authorities he will not testify in court, the Los Angeles and Santa Barbara district attorneys end their investigation. Scream released The lead single from Jackson’s album HIStory is released. A duet with his sister Janet, the song angrily addresses media coverage of the child sexual abuse allegations against him.

Bashir documentary Jackson discusses regularly having sleepovers with children, including a young cancer patient named Gavin Arvizo, in Living with Michael Jackson – a documentary fronted by the British journalist Martin Bashir. "It's not sexual," said Jackson on-screen. "We’re going to sleep. I tuck them in. It's very charming." The film rekindles police investigations. Police raid and arrest Jackson's Neverland estate is again searched by police, and a week later Jackson is arrested. Jackson charged Michael Jackson is formally charged with committing lewd and lascivious acts with a child under the age of 14. Trial begins During Jackson's trial, Arvizo and his younger brother testify that the singer showed them pornography and made them drink "Jesus juice" – wine. Both say Jackson masturbated in front of them and molested Arvizo on multiple occasions. Blanca Francia, one of Jackson's former housekeepers, testifies she saw Jackson showering with Wade Robson. Witnesses for the defence, including Macaulay Culkin and Robson, say that Jackson never molested them. Not guilty verdict The jury finds Jackson not guilty on all 14 charges brought against him. Jackson dies In the run-up to This Is It, a planned residency at London's O2 Arena, Jackson dies age 50 of a cardiac arrest. Wade Robson sues Wade Robson takes legal action against the Jackson estate, alleging that Michael Jackson molested him over a seven-year period between the ages of seven and 14. James Safechuck sues Safechuck alleges Jackson abused him on more than 100 occasions after the pair met when Safechuck appeared in a Pepsi commercial alongside the singer. Leaving Neverland Dan Reed's four-hour documentary Leaving Neverland opens at the Sundance film festival. In it Wade Robson and James Safechuck discuss at length the abuse they claim they suffered at Jackson's hands. It is described as "a public lynching" by Jackson's surviving family. Television screenings Leaving Neverland is shown on the HBO network in the US, with a UK screening on Channel 4 on 6 and 7 March. The Jackson estate sue HBO for $100m, claiming the network is in breach of a non-disparagement clause in a 1992 contract. Radio ban Radio stations around the world, including in New Zealand and Canada, begin to pull Jackson's music from the airwaves.

Earlier this month, a Chicago pre-run of an upcoming Broadway show based around Jackson’s music was cancelled because of the Actors’ Equity Association strike reportedly causing delays. Equity has rejected that its “modest” demand was to blame for the cancellation.

“The developmental lab that was scheduled for this production was delayed by 12 working days during the strike,” a spokesman said. “It is difficult to understand how a modest delay in February would impact a run that was scheduled for late October.”