Chris Hemsworth has admitted that his visit to a prison had him fearing for his life.
Hoping to find out what life was like behind bars during research for his role in Blackhat, he says he did have second thoughts when arriving at the correctional facility.
Speaking to Access Hollywood he recalled: "[We] got to the prison and I just felt all of a sudden, 'What am I doing here? My hair is [standing] on the back of my neck.
"And the warden says to us, 'OK, look this is at your own risk. Let me tell you, all they do is think about ways to kill people, so, just so you know.'
"[I was like,] 'What are we doing here then?' "
Chris was relieved to find out he got off quite lightly with the inmates because of one of his most famous roles.
"I didn't even think about the Thor thing. Straight away, a lot of them had seen 'Thor,' and it was like 'Oh, Thor's in here.'
"They start heckling as I start walking down between the prison cells. And it was like, 'I've just been heckled!'
"And it wasn't abusive necessarily, it was slightly threatening."
Despite the fear, Chris found the whole thing worthwhile in the end.
"Man, different world! And so for me, with the character, it just highlighted [that] you go in to prison as one person, you come out a completely different person, as did my character.
"That was so beneficial kind of seeing that. And it's a whole other language."
Tagged in Chris Hemsworth