Black Butler II/Nightmare Fuel

• Kuroshitsuji II also has its fair share of horror, but the one scene that tops everything occurs in episode 10. It begins with Hannah talking to Ciel and saying that she has something to show him. Perfectly pleasant, right? Then her mouth opens unnaturally wide to reveal this black abyss where the inside of a human mouth would be. The eye she stole from Alois Trancy is rooted in the back of her throat, and since Ciel's soul has been partially fused with Alois's at this point, he's basically staring at himself from inside her. Hannah watches calmly while Ciel suffers a severe nervous breakdown. Also counts as Paranoia Fuel, since up to this point the episode made you believe that they were really going to hit it off as master and servant.
• Dear God, Kuroshitsuji II. How about that bit where Claude is brainwashing Ciel into thinking he's Alois. Rewriting his past.
• Episode 1 where Alois stabs out Hannah's eye with his fingers.