It’s no secret that Elon Musk is hiding plenty of skeletons in his closet.

The mercurial billionaire has made an extensive list of enemies through his offensive commentary, led the gutting of humanitarian aid, exploited workers at his companies, and meddled with the democratic process — all the while alienating investors with his chronic overpromising and underdelivering.

Simply put, documentarian and investigative journalist Alex Gibney had a very rich source of material to draw from for his upcoming documentary “Musk,” which had its world premiere today at the ongoing Venice Film Festival.

According to journalist David Sirota, Musk is “freaking out” about the film because Gibney “doesn’t pull punches, doesn’t cower and won’t be bullied.”

“And so the bully is mad,” Sirota tweeted.

By all accounts, the four-hour epic will be a doozy. The documentarian “crafted a movie that, while not new in its specifics, is often damning in its totality, standing apart from anything the media entertainment complex has recently turned out — a portrait of power with the cinematic scope of ‘All the King’s Men’ and the potential social impact of ‘The Pentagon Papers,'” the Hollywood Reporter gushed.

Musk has reportedly gone to extreme — and sometimes unsuccessful — lengths to silence those involved in Gibney’s latest work. Musk’s ex and former conservative influencer Ashley St. Clair, who is “prominently featured” in the documentary, told reporters at the Venice Film Festival that she was “offered the opportunity not to speak for $40 million,” as quoted by People.

“When you’re offered something like that [to stay quiet], it really causes a debate in your head about what your speech means and how valuable that is and why do they want to offer me this amount of money to not speak?” St. Clair said.

St. Clair is one of four women who have had a total of 14 children with Musk, at least that we know about so far. The 26-year-old had a major falling out with the entrepreneur, going as far as to allege that the billionaire “financially retaliated” against her for filing a custody petition by reducing child support payments.

We’re likely to hear more commentary from Musk about the film. Last week, Musk tweeted that Gibney was “obviously going to make the most convincingly terrible hit piece on me that he can possibly think of,” calling him a “douchebag to his core.”

But considering the staggering amount of material Musk has gifted the world, Gibney had plenty of material to work with.

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