Whelp, I've got the setting of my next horror game figured out!

I'm just imagining the agent tactfully begging the client to clear those things out and then having to walk it back when the client was just so insulted that such a beautiful collection would make the home look anything less than it's very best.

And on each full moon, around midnight, this happens.

They broke the Cardinal rule:

1. Own one manequins, you're a family with a manequin.
2. Own two mannequins, you're the family with the manequins.
3. But own three or more manequins, and suddenly you're that family with all those manequins.

It may not be fair, but today it's a social norm that many of us have to live with.