Very nice, I love the ambience.
It's a great idea to have them have quirks in the way they talk and defend themselves! Adds a lot of replay value, and some of those were pretty funny!
I felt like some criminals were impossible : after contradicting all their lies/alibi, they'd just end up going "well, I don't care, I wont' confess anyway!" over and over, basically. But other worked great.
Not a big deal, but there's some missing characters in the font on the web version, probably the fancy "’" that the AI loves to use, and "—" too : 
PS. Please check out my game if you can ;)