Shows that are hard to see in well lit rooms. They involve blood, death, or the end of the world.
Corpse Princess
Cowboy Bebop
Criminal Minds
Dance in the Vampire Bund
Darker than Black
Darker than Black: Ryuusei no Gemini
Deadman Wonderland
Death Note
Death Parade
Devilman Crybaby
Dexter
Doctor Who