Need recommendations!

[Jason_Bourne]

Hey peeps,
Need recommendations of good manga as i'm very new to it,
I mainly read graphic novels hence never tried any manga, so any help would be really appreciated :)
Genre i'm looking for is Crime/Thriller (anything like Death Note, Steins;Gate or Film-Noir)
And the manga should be complete, i don't like reading on-going series
Thanks in advance, cheers!

 

[whatpu]

I really liked Monster. Its got crime and horror and mystery. yeah you should maybe check that one out.
http://www.animenewsnetwork.com/encyclopedia/manga.php?id=1511

 

[Jason_Bourne]

I really liked Monster. Its got crime and horror and mystery. yeah you should maybe check that one out.
http://www.animenewsnetwork.com/encyclopedia/manga.php?id=1511

Thanks mate but i've already seen Monster(anime version) and liked it very much :)
Also i'm looking for mangas which are not available as anime ;)