Selena Quintanilla fans have been on a wild, emotional rollercoaster since her murder on March 31, 1995. Though the 1997 "Selena" movie tells the heartbreaking story of her death, new details have been brought to light since, such as Yolanda Saldívar's murder confession and the shocking secret about Selena's death.

A soon-to-air documentary will reveal even more details – including the horrifying moments that led to Saldívar brutally shooting Quintanilla.

"Murder Me Famous: Yolanda Saldívar," produced by Reelz Channel, will air on December 9 and show the other side of the story that the "Selena" movie doesn't tell.

photo: Giphy

The documentary will detail what motivated Saldívar, Selena's fan club president, to kill her.

photo: Giphy

In an exclusive sneak peek, we see the Quintanilla family (specifically Abraham and Suzette) confronting Saldívar about stolen money and embezzlement.

selena quintanilla documentary
photo: Reelz

“Yolanda was firing boutique employees left and right because of cash flow problems,” Steve Helling, a PEOPLE crime reporter, says in the clip obtained by Latina.com. “But those problems were because of Yolanda. She was stealing money from the company bank account.”

In the "meeting" between the Quintanillas and Ms. Saldívar, they ask her about money missing from the business.

selena quintanilla documentary
photo: Reelz

"I'm trying to make things work," Saldívar says in the reenactment. 

Then, Saldívar tries to appeal to Selena by saying the business is hers, not the entire family's.

Selena Quintanilla documentary
photo: Reelz

The singer sits quietly by as her family handled the confrontation, but she ultimately knew that Saldívar was lying about the situation.

"Mr. Quintanilla had been doing a little investigation on his own, and found out that there was some money missing, not just from the fan club, but also from the boutiques. There was money missing everywhere," another reporter explains in the clip.

selena quintanilla documentary
photo: Reelz

Abraham presents the hard evidence to Saldívar and demands an explanation.

"There's just so much that's unaccounted for," the Selena impersonator says.

selena quintanilla documentary
photo: Reelz

Hardcore Selena fans may recognize the actress who plays the singer in the documentary. It's 27-year-old Amanda Solis, who has dedicated her life to honoring the Queen of Tejano.

After the meeting, it's clear the Quintainlla family would press charges and fire Saldívar – which immediately prompts the fan club president to purchase a gun and handle the situation on her own terms.

selena quintanilla documentary
photo: Reelz

In October, Saldívar confessed that her plan was to stage a robbery gone wrong. She reportedly wanted to avoid jail time and pay back the $200,000 she owed the family, but her "obsession" with the late singer took over instead. 

"Yolanda feels the target of her obsession is slipping from her grasp," the documentary says. "And if she can't have Selena, no one can."

What follows is the heartbreaking moment when Yolanda fatally shoots Selena in the back.

The one-hour documentary will air on Reelz as part of the documentary series that "examines killers who gained public notoriety when their crimes generated intense media coverage and made the killers household names."

Watch the full sneak peek here.