He may be softly-spoken and mild-mannered, but when it comes to bollocks, investigative journalist Louis Theroux has some of the biggest in the business.
Over the years, Theroux has found himself in some situations that would have most of us running terrified.
He's been threatened by Nazis whilst in their home, surrounded by murderers and paedophiles in high-security prisons, trapped in a house as a chimpanzee terrorised him and his film crew, has stepped out onto the streets with the most hated family in America and so much more.
Credit: BBC/Louis Theroux - Dark States
However, of all the brown-trouser moments Theroux has endured during his time on TV, there is one that stands out to him above all else.
In a recent interview with Vice, the journalist revealed all.
"Touch wood, I've largely been quite lucky," explained Theroux.
"The situations that have been the most frightening tend to be off camera, because you haven't reached that trust level where you feel comfortable starting to film, or the situation has broken down to the point where you no longer feel comfortable filming.
"One of the most nerve-racking moments I had was doing the alcohol documentary, Drinking to Oblivion, and we were in a south London flat."
Credit: PA
During the film in question, Theroux spends time with people who live in the throes of extreme, self-destructive alcoholism and gets to know them and their stories.
"There was a guy that was mentally ill and another guy that seemed emotionally unstable," he told Vice.
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"We were going to shoot a sequence, and it became clear that this is not going to go well, and the mentally ill guy was going, 'I'm not having that fucking camera anywhere near me', so I said, 'It's fine, mate, we'll just quietly go', then one of them put their arm around my neck as though to throttle me, and the other one said, 'Oi, if anyone's going to do him then it's going to be me', and I remember just thinking, 'Wow, he's going to snap my neck'.
"He was ex-Army, too, which suggests that he might actually know how to do that.
"I don't remember how we got out of there, and not a frame of film was shot. I got out and thought, 'That was ridiculous'.
"It's one thing to be on location in the West Bank or Lagos and to feel nervous, but the idea that I was going to meet my dreary demise in a social housing estate in south London, close to where I grew up, just felt all wrong."
Credit: PA
Louis Theroux will be back on our screens via BBC 2 on October 8, with his new documentary, Dark States - Heroin Town.
According to a press release, it looks at 'America's love affair with prescription painkillers' that has 'led to widespread dependency on opiates'.
Featured Image Credit: BBCTopics: louis theroux