This is real story about real people in the real Lalaurie House, hinted at on "American Horror Story: Coven" And I warn you, it is horrible.
"It was the neighbors on Royal Street who first began to suspect something was not quite right in the Lalaurie house. There were whispered conversations about how the Lalaurie slaves seemed to come and go quite often. Parlor maids would be replaced with no explanation or the stable boy was suddenly just disappear... never to be seen again.
Then, one day a neighbor was climbing her own stairs when she heard a scream and saw Madame Lalaurie chasing a little girl..."