Derek (Idris Elba) has got a pretty good life. He is a high ranking executive at the financial firm where he works, he has a wonderful wife in Sharon (Beyonce Knowles), a young son, Kyle, and he just bought a new, and fairly large, home. Even while friends and co-workers, like Ben (Jerry O'Connell) go out to strip clubs, he stays faithful to his wife and goes home every night with a clear conscience. But his perfect life slowly gets upturned as a new temp walks into his office building, Lisa (Ali Larter).
After a few kind words directed at the slim and sexy Lisa, it becomes obvious (at least to viewers) that she has started developing a liking for the strapping Derek, but he eventually sees that her constant reappearance around the office might have more to do with him than the working environment. Events escalate at the Christmas party where she gets him drunk and sneaks into the boys bathroom after him, but even though he stays loyal to his wife and gets away from her, she doesn't get the message and starts pursuing him even more. The problem with Derek is that, even though he gets plenty of chances to tell Sharon of the stalking Temp, he doesn't. Even when the girl shows up in his car dressed only in her skivvies, he finds excuses not to tell his wife. When he finally decides to go to HR and report the issue, he finds that she has quit and just walks away. Yet another opportunity to stop what will inevitably happen falls by the wayside, and the crazy Lisa's obsession only gets worse.
Like I said, the story isn't anything new, and the most annoying aspect of it is that the two protagonists, Derek and Sharon, supposedly intelligent and good people, have too many opportunities to make things turn out better simply by talking. Instead, Derek keeps his mouth shut about Lisa, and when Sharon finally finds out about Lisa, she suspects her husband of cheating as if this is something he has a long history of doing. It's really hard to sympathize with these two characters because of all the bad mistakes they make. Heck, I found it easier to sympathize with Lisa as we see her slowly descend into her crazy delusions about she and Derek's non-existent relationship.
Obsessed's Blu-ray release doesn't come with any added special features over the DVD version, so any benefits you get from the more expensive media come solely from the upgrade in visual and audio quality, and while it is there, there isn't really anything about Obsessed that screams a need for high definition. What special features it does have, though, are somewhat interesting at least. "Girl Fight!" goes through the choreography of the movie's climactic fight scene between Larter and Knowles in Derek and Sharon's new home, while the "Dressed to Kill" featurette goes through the many outfits worn by the main characters of the film.
Honestly, even for thriller fans, Obsessed is barely worth seeing once. The actors and actresses do an okay job with their roles, but the characters themselves just don't seem interesting enough to warrant any re-watches. At most, rent this film, and there is really no reason to choose the Blu-ray version over the DVD one, at least none that I could see.