The Dead Files, with medium Amy Allan, had Allan tell the haunted residents in their Rome, New York home that she had encountered something she had never experienced before. Besides the usual spirits haunting the property, it seems there are also tall, human looking but decidedly not human beings that Allan said were "aliens." Either aliens, or beings from another world -- not spirits or ghosts of humans, or even non-human energy type entities and creatures (demons) but, for lack of a better term, aliens. Non-human beings from another planet.
These beings appear to be after the children in particular. Allan said these beings will probably always be there and she didn't know how to get rid of them.