Maybe 'The Darkness Within' could work. It suggests that the horror comes from deep within the characters or the situation, making it more psychological and creepy.
Shadows that Whisper. This name creates an eerie image of shadows having a life of their own and whispering things that are probably not good, setting a spooky mood for a horror story.
Midnight's Scream. It's simple yet effective. Midnight is often associated with the darkest and most mysterious time of the day, and a scream implies terror.
Another option could be 'The Whispering Death'. The idea of death is always terrifying, and the 'whispering' part adds an element of mystery. It makes you wonder what this death is whispering, perhaps it's luring the characters into a trap or foretelling their doom.
The Blood - Soaked Cellar. A cellar is already a rather spooky place, often dark and damp. When you add 'blood - soaked' to it, it immediately brings to mind a scene of violence and horror, perhaps a place where some gruesome murders have occurred.
The Cursed Forest. People often associate forests with mystery and danger, and adding 'cursed' makes it even more terrifying. There could be all sorts of malevolent spirits and deadly traps hidden within.