Imagine someone gave you a challenge: you have to write a movie that takes place in a single location. But to make the challenge harder, the location is the inside of an SUV.

That's Locked. I hadn't heard of it, there were no reviews of it, and I didn't really know what to expect after watching the trailer. I just knew it was a criminal (played by Bill Skarsgard, who played the clown in the recent "It" movies) who tries to steal a car owned by Anthony Hopkins (most known for his role in "The Silence of the Lambs"). And he gets locked inside the car and can't get out and ... things happen.

I'll say this before I go into a mildly-spoilerish review: if I hadn't been watching the movie with other people, I might have left. Not because it was boring, but because of the swearing and violence and darkness of it all.

You see, Anthony Hopkins is about to die from cancer. And he's rich. And since some street thugs killed his daughter, he wants other street thugs to face justice, so he built a car you can't escape from and he uses it to mete out justice to anyone who enters the car without permission.

Bill Skarsgard is having a bad day and he just wants to pick up his daughter from school, so he enters the car (the brand name is Dolus which means "trick" in another language, which I learned from Google) and for the rest of the movie he is trapped.

The owner blasts the A/C to freeze him while playing yodeling music at top volume. He turns the heat all the way up to make him sweat, knowing he can't access food or water. He even drives the car remotely to make the criminal suffer.

And there's tons of swearing. And lots of blood. Because the criminal doesn't realize that the car is bulletproof and blocks all cell signals, so he tries to shoot his way out and ends up shooting himself. So he is bleeding, hungry, thirsty, hot, cold, etc., as he tries to survive to see his daughter again.

It also has a lot of interesting social commentary on rich vs. poor, criminal vs. law-abiding citizen, morality vs. immorality, and other similar topics. That part was fascinating.

But man! The blood and suffering and swearing (every time the criminal swears he gets tased through the seat of the car) is insane.

I can't, in good conscience, recommend this movie to anyone. It is dark and violent and gross.

It is also captivating and interesting. And therein lies the problem.

Don't go see "Locked." But if you do, you have been warned. It stinks of desperation and despair and retribution and vengeance.