what is the plot of american horror story season 1
American Horror Story: Murder House
The first season follows the Harmon family : Ben ( Dylan McDermott ) , Vivien ( Connie Britton ) and Violet ( Taissa Farmiga ) , who move from Boston to Los Angeles to start a new life in a Victorian mansion , after Vivien has a miscarriage and Ben has an affair with Hayden ( Kate Mara ) , one of his students . On arrival , they learn from Marcy ( Christine Estabrook ) , the real estate agent , that the previous owners of their new mansion , a couple named Chad and Patrick ( Zachary Quinto and Teddy Sears ) , died in an apparent murder / suicide . Their neighbour Constance ( Jessica Lange ) and her daughter Addie ( Jamie Brewer ) become frequent , and mostly unwelcome , guests . Addie seems to have a connection with the house 's mysterious past . Larry Harvey ( Denis O'Hare ) , a former resident of the house who has suffered from terrible burns , also begins inserting himself into the Harmons ' lives , giving Ben a cryptic warning about the house . The house also `` comes with '' Moira O'Hara ( Frances Conroy / Alexandra Breckenridge ) , a housekeeper who appears young and seductive to men , but old and matronly to women . 
The first season follows the Harmon family : Ben ( Dylan McDermott ) , Vivien ( Connie Britton ) and Violet ( Taissa Farmiga ) , who move from Boston to Los Angeles to start a new life in a Victorian mansion , after Vivien has a miscarriage and Ben has an affair with Hayden ( Kate Mara ) , one of his students . On arrival , they learn from Marcy ( Christine Estabrook ) , the real estate agent , that the previous owners of their new mansion , a couple named Chad and Patrick ( Zachary Quinto and Teddy Sears ) , died in an apparent murder / suicide . Their neighbour Constance ( Jessica Lange ) and her daughter Addie ( Jamie Brewer ) become frequent , and mostly unwelcome , guests . Addie seems to have a connection with the house 's mysterious past . Larry Harvey ( Denis O'Hare ) , a former resident of the house who has suffered from terrible burns , also begins inserting himself into the Harmons ' lives , giving Ben a cryptic warning about the house . The house also `` comes with '' Moira O'Hara ( Frances Conroy / Alexandra Breckenridge ) , a housekeeper who appears young and seductive to men , but old and matronly to women .
On arrival , the Harmon family learn from the real estate agent, that the previous owners of their new mansion, a couple named Chad and Patrick, died in an apparent murder / suicide .
 Larry Harvey, a former resident of the house who has suffered from terrible burns , also begins inserting himself into the Harmons ' lives , giving Ben a cryptic warning about the house .
On arrival , they learn from Marcy ( Christine Estabrook ) , the real estate agent , that the previous owners of their new mansion , a couple named Chad and Patrick ( Zachary Quinto and Teddy Sears ) , died in an apparent murder / suicide . Larry Harvey ( Denis O'Hare ) , a former resident of the house who has suffered from terrible burns , also begins inserting himself into the Harmons ' lives , giving Ben a cryptic warning about the house .