"Shadow Killer"

A family with no history moves into a mysterious house. First it was Hannah who was cursed. Now...the curse is spreading. The family begins seeing Black lines everywhere and not only there bodies but on walls and furniture to. Then one day they see a sentence in black that terrifies them all, "I WANT YOU ALL DEAD!".
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Then one day Hannah meets a mysterious boy.This is a story of a life of two different people who meet together to overcome a darkforce. The problem is...can this mysterious boy be trusted?...