Empire reports that the actress will play Mary Guibert, the mother of the cult folk-pop singer, who died in 1997.

Here’s the nut graf;

“The film, which according to whatever source you believe is either untitled or called Mystery White Boy, will follow Buckley’s life and cruelly short career from his early musical days and his mother’s encouragement to his tragic death at 30 in 1997.

[Director Jake] Scott has the advantage over fellow Buckley biopic-makers (competing project Greetings From Tim Buckley has Penn Badgley up as Jeff), as he’s not only got the blessing of the real Mary Guibert, but also access to Buckley Jr’s music and personal archives, including key permission to use the now legendary version of Leonard Cohen’s Hallelujah. Arquette’s presence will mark her second time working with a Scott after appearing in 1993 True Romance for Jake’s Uncle Tony.”

Read the full story here.

Here’s Buckley performing “Hallelujah.”