First off I know about The Girl With The Dragon Tattoo and so on. Also I know I could look up popular Dark Fiction books on Google. However a critic can drone on and on about it but all they write is all they write. If someone here recommends me something I can ask questions about it. So anyone know anything?
I suppose I'd recommend Worm, the web serial and Pact the web serial by the same author. Both have a dark atmosphere, Pact moreso. Worm is mostly morality/Anti-hero stuff, but it's really well done and even though it starts off a bit slow and typical it really grows on you.
For Dark Fantasy I'd go with Prince of Thorns by Mark Lawrence (It's pretty gritty), Assassins Apprentice by Robin Hobb and Daughter of Blood by Anne Bishop (Warning though as both are high fantasy so if that's not your thing...)
For Dark Comedy I'd go with the YA novel Cracked by Eliza Crewe. Hilarious and dark.
For Dark Romance I'd go with The Tied Man by Tabitha McGowan. Dark, terrible and heartbreaking.