Criminal Minds continues the trend of Korean remakes of popular North American shows. Unfortunately it also seems to be following the general trend of the remakes not managing to quite live up to the originals (or even really stand on their own).
The basic premise of the original is kept - a federal level organization has a criminal profile team that handles the hardest cases. Most core main cast members are kept (and those that aren't have aspects merged into those that were brought over). The cases also are taken from the original show.
However, disregarding the original entirely and judging the show solely by its own merit does reveal its weaknesses.
The profiling group is poorly written. Over the course of twenty episodes we learn about their pasts (or get hints of it), and we watch them grow closer together as they face the worst of humanity. And yet despite all that, they feel flat and two dimensional. They often take back seat to the villains, who are terrifying but humane and tend to take over the center stage. Part of it has to do with the directing, which has lots of moments of staring and exposition while part has to do with the writing. It feels as if the writer had so much fun creating the villains that they forgot to do the same to their leads. The odd directing choice of having cases end in the middle of most episodes also threw off the tone. There's the finale moment of closing the case, and then you're suddenly dropped into another terrible crime for the second half. It's jarring and more obvious when the case closes an episode and feels tonally smoother.
Overall a recommend for fans of the actors, the original or criminal procedure shows but otherwise nothing interesting to offer.