Not every film you see is something you've been anticipating for a long time. Sometimes you see a movie and think "hmm that looks interesting." Such was the case for Adulterers. It's safe to say most people will go into this film with that mind set and hopefully they'll remember that this film is an independent project with a lower budget.
Right off the back, it's important to know this script is all over the place. Dialogue in most scenes feels so off it's difficult to listen to. It doesn't help when the acting feels so overdone that it's not being delivered. There are several occasions where some tension will build only to be torn down by the following line being terribly delivered or a reaction from the characters that feels completely unbelievable; cringe-worthy even.
The premise itself is simple and a perfect set up for a thriller. Your average guy comes home on his anniversary to find his wife cheating on him and the rest of the film experience is to find out whether or not he kills them. Moving along the story, you learn certain "twists" about certain characters which keeps things interesting and new. A few of these attempt are indeed interesting. The rest feel out of place and make you ask "Wait... what?" Outrageous and disturbing behavior/content aside, you may wonder why you're sticking around to see how it ends.
Here are some almost strengths. Yes, there are a few of those. As mentioned before, despite how bad the writing might be, the filmmakers do a good job and holding on to you to see how it ends. Tension does indeed build enough so that you're a part of the thrill ride. The progression and structure of the story itself is compelling. Granted, it's obvious the filmmaker was trying desperately hard to be a Scorsese/Shyamalan (early Shyamalan). However, it makes for a solid and thought-provoking ending to the film.
Aside from the "strength" it's hard to recommend this film to anyone who's looking for an absolutely fantastic thriller. It won't be found here but if you're searching around Netflix and have nothing to watch. There might be worse films to use an hour and a half with.