Audiences got a look at Benjamin Netanyahu’s leaked police interrogation videos for the first time at last night’s world premiere of The Bibi Files. The urgent and incendiary documentary played at the Toronto film festival despite the Israeli prime minister’s attempts to block its screening.

Israeli courts rejected Netanyahu’s request before the film – in which he is seen furiously denying allegations of bribery and corruption – was unveiled to a tense and vocal audience, many of whom were carrying signs reading “Bring Them Home” and “Deal Now”, referring to hostages held in Gaza.

The film, directed by Alexis Bloom and produced by Alex Gibney, builds a rigorous and damning case, posing an argument close observers may already be familiar with: Netanyahu is prolonging the devastating war in Gaza – which has amassed more than 40,000 deaths – to avoid possible prison time stemming from corruption charges. A humanitarian crisis flouting international law is all about his self-preservation.

According to the documentary – which Bloom began working on before 7 October, when a source provided Gibney with the leaked videos – Netanyahu’s lawyer filed a motion to delay the trial currently scheduled for December. The lawyer cites the ongoing war as the reason.

“I’ve never seen the depth of moral corruption as I’ve seen in this man,” Gibney, the director of Enron: The Smartest Guys in the Room, told the audience following the screening. A member of what appeared to be a largely pro-Israel audience policed Gibney’s language, interrupting the producer to clarify that Netanyahu had not yet been found guilty. The attempts at seizing control of the narrative, both on screen and off, didn’t end there.

The interrogation videos shown in the film were recorded by police between 2016 and 2018 before they formally brought charges of corruption against Netanyahu. The footage includes the prime minister addressing allegations that he and his wife accepted expensive champagne, Cuban cigars and jewelry from the Hollywood producer Arnon Milchan. Netanyahu is heard minimizing the champagne and cigars as simply gifts from a friend, while denying knowledge of the jewelry.

Several witnesses who worked for Milchan and Netanyahu are also shown speaking to police. They paint a picture of regular gifts expected by Netanyahu and his wife, Sara, in exchange for favours. One such favour includes a marginal tax break extension that benefited Milchan. Netanyahu argues his unusual interference regarding the tax break was for the good of the state, not Milchan. Meanwhile, the LA Confidential producer corroborated much of the witness testimony, though, in one excerpt, he gently asks police not to use the word “bribery” because it would make him look bad.

Netanyahu is also seen vehemently denying allegations that he signed off on regulations favouring the Israeli media mogul Shaul Elovitch. The prime minister repeatedly and dramatically calls one of his top aides, Nir Hefetz, a liar for saying so. Other witnesses argue Elovitch paid back the alleged generosity by allowing Netanyahu to directly influence coverage of his family on the popular website Walla.

The incriminating evidence in the interrogation videos has already been leaked and reported on by Israeli media. But the videos will never be shown to the public (at least legally) in that country. According to Gibney, Israeli law grants privacy to subjects who have been photographed in official proceedings, which would make publication of the footage illegal. “It’s a peculiar law to Israel [that] doesn’t affect the rest of the world,” Gibney said.

He explained that they brought The Bibi Files to Toronto, as a work-in-progress, because it urgently needed to be seen while the death toll in Gaza continues to rise. But also because they are seeking distribution partners at the festival’s market, hoping to get the film released as quickly as possible for the world to see.

Though the documentary doesn’t reveal new information, Gibney explains that for an audience familiar with Netanyahu’s carefully stage-managed speeches, watching his agitation under interrogation, where his performance begins to crack, is illuminating. At various points when police officers confront him with incriminating testimony from his peers, Netanyahu raises fists and repeatedly slams his hand against his desk as if the banging will silence the accusations.

“Even in the interrogation videos, you see performances,” says Gibney. “But you see performances that are not as finely tuned; that are performed for an audience of three people; that he doesn’t think is going to get out of the room.”

The Bibi Files contextualizes the interrogation videos with a portrait of Netanyahu, whose career is built on stoking fear and promising security, and whose personal life is largely in service of his wife Sara’s turbulent moods and expensive lifestyle. Sara Netanyahu’s erratic testimonies and outbursts during testimony are also included in the footage.

Insiders like the Israeli journalist Raviv Drucker, former Shin Bet head Ami Ayalon, a childhood friend and more are on hand as talking heads. They connect the dots and reveal the long-running pattern of Netanyahu serving his own interests while clinging to power – from deliberate ploys to sabotage an alliance between the West Bank and Gaza by enabling Hamas, to his alliance with the violent far right and attempted overhaul of the supreme court to save himself from prosecution.

Bloom expressed disappointment after the screening that more people didn’t speak up on the record. She said she interviewed former chiefs of staff, heads of Shin Bet and others in senior positions under Netanyahu who would speak to her for hours about his lies and corruption. One of them compared his regime to the Netflix series House of Cards. “One said to me, ‘Well, you know, I might go into politics myself one day,’” Bloom recalled. “‘So I have to be careful.’”

The atmosphere at the premiere, which was announced just days before the festival began, was more anxious than usual. Added security, including a police canine unit, were at the scene. While the screening itself went off without a hitch, many in the audience appeared agitated during the post-screening conversation between Bloom, Gibney and Tiff’s documentary programmer, Thom Powers. Some yelled out for their turn to have a say, prompting Powers to call for some order and avoid overt statements.

Following the conversation, a visibly nervous Bloom was surrounded by a crowd and accosted by an audience member who claimed that she included “a bunch of lies” in the film. He was referring to the report that more than 40,000 people have been killed by Israel’s military actions in Gaza.

“You don’t know that,” he said before asking, accusingly, “Are you trusting Hamas?”

“I think they’re corroborated,” Bloom gently responded.

“You are putting a false narrative out there,” he warned.

• The Bibi Files is screening at the Toronto film festival; it is in UK and Irish cinemas and on digital platforms from 13 December.

• This article was amended on 10 September 2024. There have been more than 40,000 deaths in the Israel-Gaza war to date, not 40,000 casualties, which includes injured people and is a far higher figure.