The first few episodes of the live action are pretty good! However, by the end of the show it's become fully evident that the writer (or perhaps the person who adapted the light novel into a live action?) has very little idea how to keep things suspenseful for the viewer, which is- as you might imagine- a fatal flaw for a mystery show. The first three or so episodes are fine, but by the ending I can't help but have a sneaking suspicion that there are hardly any real narrative consequences for the characters.
It's a pity, because while I haven't watched the anime myself, I became curious about how this live action version fared as an adaptation as compared to the anime and I love what they changed. Instead of a high school sidekick, they made Shotaro a college grad, they took out Sakurako's fiancee, etc. Shotaro's internal monologue was quite funny as well. But ultimately, these changes aren't taken to their logical conclusions, instead hovering in some sort of nebulous space where Shotaro keeps insisting that he's twentysomething but the show keeps treating him like a child, and where it rather seems as if most problems can be solved by a good speech or two. It's worth watching the first half, at least, but its definitely not a show that gets better as it goes on.