A mysterious girl found on the road carrying a doll. She stays at the farmhouse and is later revealed to be a demonic entity connected to Wayne's ritual, appearing in Emily's truck at the end.
Wayne is Lucy's father and makes horrific sacrifices to preserve her life.
Lucy arrives at the farmhouse with her parents, Val and Wayne. Wayne later explains that he acted to save Lucy's life.
Val is Lucy's mother and part of the family concealing the supernatural danger.
The plot identifies Val and Wayne as Lucy's parents, and Val stays involved in the farmhouse events surrounding Lucy.
Emily initially treats Lucy as a vulnerable child needing protection.
Emily gives Lucy a ride, accompanies her into the farmhouse, and remains behind when the group initially decides Lucy cannot be left alone.
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