And what happens?

The first season centers on the Harmon family: psychiatrist Ben (
Dylan McDermott), his estranged wife Vivien (
Connie Britton), and daughter Violet (
Taissa Farmiga). They move from Boston to Los Angeles after Vivien had a stillbirth and Ben had an affair with one of his students. On arrival, they learn that the previous owners of their new mansion - a gay couple - apparently died in a murder/suicide. Their neighbor Constance (
Jessica Lange) and her daughter Addie (
Jamie Brewer) become frequent, if sometimes unwelcome, guests. Addie, who has Down syndrome, seems to have a supernatural connection with the house's mysterious past. Upon exploring the attic, Vivien discovers a gimp suit. The house also 'comes with' Moira O'Hara (
Frances Conroy/Alexandra Breckenridge), a housekeeper who to men appears as young and seductive, but to women old and matronly.