Was great while it lasted, not quite sure what happened to the mangaka but an indefinite hiatus is a big turn-off.
Would recommend for people who liked titles like Hyouka, as it has that sort of feel.
If, in the case that a new chapter is released I would probably re-read the rest of the series before reading it, and still have more time before another chapter.
Great manga though, character development, the story, and the mystery factor were great. The art is good and the series is overall really well done.
Overall an 8/10 manga, doesn't have very high re-readability unless you take a long gap, i.e. the amount of time between chapters.