It will give you nightmares and it’s not even a good horror movie. It’s disturbing with no redeeming value.
Even if you aren’t easily disturbed by movies, you still shouldn’t watch it because it was disrespectful to the victims of the real-life case it was based on. The producers shouldn’t benefit from glorifying a couple of serial killers. Beyond that, the production sounds very sketchy and not a good environment for the actors. I’ll just let Misha tell it:
Misha at Sydney Con in 2009:
“I had never heard of the case before when I got the script, and when I started to read the news articles I thought, ‘I don’t know if I can actually do this. It’s so warped.’ And then, when I got to set, I was sure they were going to fire me, because I was sure they were going to shoot the first scene and I’m not that guy. At all!
“And the first scene we shot was a scene where I’m beating Karla, my wife, mercilessly, and I was just totally shocked by how - just shooting that first scene - something clicked. And I felt totally invigorated and exhilarated when I was beating her. I mean, it shocked the shit out of me!
“That was the most intense thing I’ve ever worked on as an actor, by far. While we were shooting, I was having his dreams - so I was dreaming a serial killer’s dreams. And I’d wake up and be, like, Get out of my head! It was really kind of scary. Never had that happen before. I remember going for a run and I was running by this junior high school in the neighborhood and I was leering through the chain-link fence at the thirteen-year-old girls on the playground. And it was just involuntary. It really just took me over.
“It was a weird, really poorly run set. The director was a total creep. They ended up taking a restraining order against him at the end of the shoot because he threatened to come into the production offices and shoot everyone. I mean, we were doing these incredibly, like, emotionally hard, scary rape/murder scenes, and he would come out and say things like - there was one scene where I was like tying this girl up and beating her and humiliating her and he comes in after and he was like, ‘Misha, great job. That was really hot.’ What?! We’re crying here! It was really weird.
“So, to answer your question, it was very strange, and I was scared that it was gonna go out of my head, but it did. As soon as we wrapped, it was gone. Although I did see that there was seeds of violence within me that were so far repressed that I didn’t even know that they were remotely accessible. It made me sort of understand how someone could grab a machete and go out and kill their neighbor because everyone else is doing it. There’s certain primal energies running through us that I think that everyone has available in them. It’s just fortunately most of us never tap into those things.
“It’s actually not a very good movie, so I wouldn’t recommend watching it.”
Misha at NJ CON in 2010:
“On just about every single level, every step on the way in the movie, there was something weird happening that shouldn’t have been happening. First thing that happened was getting the part. Shouldn’t have happened. Didn’t know about the story. You know, in Canada, they’re infamous and people are like, ‘I cannot believe that you did that movie. You suck.’ Someone moved away from me on a bus. So, didn’t know what the movie was about, but I had the script, so I should’ve known better than to do it.
“Second thing was, we had very little time to rehearse, so Laura Prepon, who’s the redhead from That Seventies Show who dyed her hair blonde for this part, she was like, ‘Let’s go to my acting coach,’ who was this psychotic guy in the Valley. What he recommended that we do - you know, because we had a lot of physical scenes, was to get to know each other physically before we started shooting. So Laura Prepon and I, at the direction of her acting coach, like basically kind of make out on the floor in her mansion as part of our rehearsal process. Little weird. Totally inappropriate. I never told anyone that before. (Sorry, Laura, for outing us!)
“It was just a little weird. And I felt like, ‘Yeah, this is fun, but this is … not really … not right.’ […]
“Went up for a press junket. Had no idea it was such a big deal in Canada still after we finished shooting. I was in a press junket in Vancouver, the first interview I had was like - by the way, all over every newspaper, it was a huge - they were trying to pass legislation in Ottawa banning the film. And - got up there, and I sat down and they said ‘Why would you want to do a film like this?’ and I said ‘Well, you know, for an actor to have the opportunity to play a role that’s on the one had this charming, well-loved investment banker, and on the other hand, this sociopathic rapist and killer - it’s a rare opportunity to have a character that that’s strange and complex and difficult to capture.’ And she said, ‘So you would tell the victim’s families that you saw their daughters’ death as a great opportunity for your career?’ And this is on camera. And I’m like, ‘No? I would not say that to them.’
“It was awful! It was just awful and weird and surreal. And one of the victims - the sole surviving victim - called me on the phone and had this like 2-hour phone call when I had to pull off on the side of the highway and talk to her for two hours when the movie came out. Just, uh … yeah. Awesome!”
Misha at Van Con 09:
“Don’t watch the movie. I keep on saying that at conventions and sales of the movie have gone up. Folks, stop watching Karla. Don’t buy it, don’t rent it, it’s a crappy movie and it’s not uplifting, so stop watching it. And they don’t pay us residuals for some reason so there’s no good reason to watch it. Thank you.”
Backstage Rising Con Brazil, 2011:
Fan: Karla. My friend made me watch it.
Misha: I’m sorry. I tried to tell everybody -
Fan: She showed me your nipple.
Girl: She said, I can see his nipple!
Misha: I tell everybody not to watch Karla.
Girl: I think it’s a great movie.
Misha: It’s not a good movie, and people should not watch it. But every time I go anywhere, people say, “Well, you said not to watch it, but I watched it anyway.” So, I’ll say it again: Don’t watch Karla. It’s not a good movie. There are other movies actually that I’ve done that are good that never got released, like Par 6. That’s a very good movie, I think! Funny little comedy, but it’s, uh, they never released it. So no, you can’t get it.
Fan 2: It’s a shame.
Misha: It is a shame. But unfortunately Karla is out there. One of the worst movies ever made.
Fan 2: Are you saying don’t watch the movie, or watch it?
Misha: No, don’t watch it.
Girl: Your acting is amazing. Don’t say that!
Misha (sighs and shakes his head): Thank you.
Misha at Toronto Con 2011:
“It’s not a good movie. Don’t see it, please.”
You should watch Finding Home instead!
It’s got blond!Misha kissing girls and generally being cute and like 95% fewer rape scenes. Plus I’m pretty sure that while Misha was shooting this movie, he was making an engagement ring for his wife, so it’s probably a good memory for him too.