Question: Savage Grace is based on the dysfunctional, allegedly incestuous relationship between which wealthy American socialite who was murdered and her son, Antony?
Sentence (from "Savage Grace"): Savage Grace is a 2007 drama film directed by Tom Kalin and written by Howard A. Rodman, based on the book "Savage Grace" by Natalie Robins and Steven M.L. Aronson.
Relevant evidence: No