Dream of father, animals, children, daughter, falling

I dreamt about a couple finding three children and bringing them back to their home. The home was huge, but mostly falling apart. The dream took place mostly in the sun room, kitchen, and outside of the house. There was garbage everywhere. Lots of piles of gross garbage. There were also animals of all shapes and sizes. Lots of dogs, cats, snakes, and one very large bird. The couple were mentally unhinged and already had three children of their own. They abused the children and treated them poorly. The father was sexually interested in his oldest daughter Emily, but could not have her. He murdered her and buried her body in a shallow grave in the landfill across the street from the house. The remaining children sneak out and find their sister's body. They resolve to run away. The come to what looks like another abandoned house, but this one is clean and functions like an orphanage.