Screenings for a film chronicling the Mormon Church's role in Prop. 8, California's gay marriage ban, have sold out at the upcoming Sundance Film Festival.

8: The Mormon Proposition was the first documentary to completely sell out in this year's slate of films, according to The Herald Journal newspaper in Utah.

Director Reed Cowan's 80-minute documentary will have its world premiere January 24 at the festival.  

“We plan on opening up a dialogue during the festival and hope that dialogue will continue on a national level for years to come,” Cowan told The Herald Journal. “The film is important and premiering in Utah makes it even more important. ... Bringing an examination of the wrongdoing to the scene of the crimes, so to speak, is historic.”