An upcoming HBO documentary explores the unanswered questions that persist more than three years after the death of Sandra Bland.

Say Her Name: The Life and Death of Sandra Bland, which premieres on Monday (Dec. 3), offers a deeper look at Bland’s story, including “disturbing, never-before-told details into the case.”

Filmmakers Kate Davis and David Heilbroner began working with Bland’s family 10 days after Bland was found hanging in a jail cell.

On July 10, 2015, Bland was pulled over for a traffic infraction that ended in her being forced from her car by former Texas State Trooper Brian Encinia, who claimed that he feared for his safety. The traffic stop was recorded via dash cam footage and quickly went viral. Bland was arrested and taken to Waller County Jail where she was found dead, three days later. Her death was ruled a suicide.

Say Her Name infuses recordings from Bland’s Sandy Speaks video blogs, allowing the 28-year-old Chicago native to “narrate the documentary about her life,” as her sisters, Sharon Cooper and Shante Needham, explained during an appearance on The View Tuesday (Nov. 27).