Thanks for the tips, everyone! I forgot to mention that I've read and loved both Dennis Lehane and James Ellroy. I have yet to read all their books, though - so far, I've stayed away from Dennis Lehane's Kenzie/Gennaro mysteries, just like I've avoided Coben's Bolitar series. I tend to prefer crime novels without a token detective/hero. Overall, I like dark, sort of seedy and grimy crime novels where the distinction between good and bad isn't crystal clear.
Jonathan Kellerman is another writer I've been wanting to check out, so thanks for the tip.
Does anyone know if Lehane will publish a new novel soon? Shutter Island is one of my favourites within the crime novel EVER - right up there with And Then They Were None, LA Confidential and The Big Sleep - so I can't wait for a new one.
Sorry 'bout the third degree btw. I will start studying literature in January, basically covering everything from Homer to Hemingway in one semester, so I very much doubt I'll have time to read my beloved crime novels after Christmas break.