One of the best performances by Kevin Costner! Absolutely stunning, so soubtle! Also William Hurt was great as the evil alter ego. Together, their interacting was very balanced and sometimes nearly the same. The only disappointing performance was given by Demi Moore: Please just produce films and don't act anymore, ok? The end cries for another movie, and I honestly must say that I wanna see more of Mr. Brooks.

Really a terrific story. Just nice and easy to follow, recognizable, great screenplay and acting and an ending which is just as clever as the rest of the story.

This took me from hating it to loving it. I had some bad feelings about it as I watched it, I saw it as some TV show(a poor man's Dexter, to be more precise), but though some things looked a bit too stereotypical to work, they took a turn in the right direction and everything ended up being enjoyable (though it did almost 'jump the shark'). I'm not sure how I feel about the soundtrack and ending, but what I do like is Costner's and also Cook's performance. All in all, a pleasant surprise.

Kevin costner as a bad guy? yes please.

Really good thriller that keeps you on your toes. It could be better, especially the side plot with the daughter, but overall pretty satisfying.

Total surprise. I loved this movie. Even Dane Cook is great in this. That's how good this movie is!

Far better than you would expect reading the cast list, Mr Brooks takes inspiration from Alfred Hitchcock and lays out all of the cards on the table early rather than holding out for inane plot twists and makes for well a paced, suspenseful film. A man addicted to murder (like Dexter) has to struggle with his inner demon (literally, as William Hurt) and try to hold his life together as his latest murder leaves an opportunistic witness and too many loose ends to kill his way out of.

Overall an enjoyable film, as long as you don't think too in-depth about the plot. Lots of twists and subplots that it feels like a cinematic roller coaster. William Hurt is amazing, and I love how he's always "in the back seat," both literally and figuratively. Costner is fine, but he falls flat at times. It's refreshing to see Dane Cook do something other than Rom-Com. And Demi Moore could've been left out of this movie completely. The ending left a bad taste in my mouth, but I won't spoil.

I thought this movie wasn't good. The acting was boring and not good. I didn't feel anything, just boredom. The story could be good, but unfortionally it wasn't

Took Costner long enough to make a decent film. And this film is decent. I really liked it.

Underrated. Top-notch for this genre.

Not really an interesting film!

Good acting from Costner in this somewhat more scary film than I thought about a businessman leading a double life as a serial killer. The soundtrack is typical of popcorn teenager films which deteriorated the mood for me a bit and while I sympathized with Costner's character in what was quite an entertaining storyline, there were some annoying improbabilities, underlined by a disappointing ending. Pretty good thriller though.