My Son, My Son, What Have Ye Done?

My Son, My Son, What Have Ye Done is a 2009 crime drama film directed by Werner Herzog, and written by Herzog and Herbert Golder. The film stars Michael Shannon as Brad McCullam, a mentally unstable man who kills his own mother after becoming obsessed with a play he is starring in. The film follows a hostage situation resulting from the murder, while also showing the events of McCullam's life leading up to the murder in flashback, with Willem Dafoe appearing as the lead detective, and Chloë Sevigny as McCullam's fiancée.