Very great soundtrack, it has a lot of variety and it flows together very nicely !
With the theming, style and soundfonts that you use, it reminded me quite a lot of Ghost Trick's soundtrack (which is always a plus).
I really liked Last Seen, lots of different interesting sections that mesh very well, Looking Into It has a great atmosphere and is very immersive for your story, and Unhide finishes the album very efficiently with great energy. Very nice work, congrats (and very nice story too, that makes two of us for the detective setting from what I have seen for the moment) !