http://www.mangago.me/read-manga/shingakkou_noli_me_tangere/
http://www.mangago.me/read-manga/last_portrait/mf/v01/c002/14/
http://www.mangago.me/read-manga/mw/ (more like how a psychopath commits murders)
well...i know few good stories involving murder...but not with a mystery genre...
maybe http://www.mangago.me/read-manga/transfigured_night/ will fit your standards ?
Ohh shingakkou is also a bl game!
Noice! Thanks for the suggestions. I'm definitely going to check them out see what's up.
Is there any yaoi that involves a good murder mystery?