Following the events from last week's American Horror Story episode, there's one obvious question out there: Why would the Harmons remain in this house?!?

That inquiry is answered on this Wednesday's "Murder House," as the family puts the residence on the market, but then Vivian learns about its first residents. Elsewhere, we discover more about Constance and Marie's history and - gulp! - Ben faces an unwelcome visitor.

Watch the official promo now: