A gripping new true crime documentary comes to Netflix on Wednesday, following a bereaved mother who turns to social media for answers about her daughter's murder.
Why Did You Kill Me? follows the aftermath of 24-year-old mother of two, Crystal Theobald, who was shot dead in a California neighbourhood in 2006.
Theobald became tangled up in a gang retaliation, and was shot dead in her car in Arlanza, a neighbourhood in Riverside County, California in February 2006, despite not being involved with organised crime; it later transpired that the gang responsible were shooting in retaliation after one of their own vehicles was shot at.
Theobald left behind two children and her boyfriend. Since her death, her family have been searching for answers using the power of social media.
Describing the chilling new doc, Netflix said: "The line between justice and revenge blurs when a devastated family uses social media to track down the people who killed 24-year-old Crystal Theobald."
Theobald's mother, Belinda Lane, was in the vehicle behind at the time of the shooting and so she had to witness the horror of her daughter being murdered.
"I was just a mess. I was just so enraged, angry, sad, overwhelmed. I just didn't even want to live. I just wanted to die," she told Eyewitness News in 2016.
Lane made it her mission to bring her daughter's killers to justice. She used the social media site MySpace to track down who she suspected was responsible for the shooting.
Lane searched relentlessly for ten years for her daughter's killer. In 2016, she found the final piece to the puzzle when she helped police capture the last gang member to be brought to justice.
"I told her, 'Baby girl, I promise you if it takes my last breath, I will get them; I promise you, you will have justice," Lane told Eyewitness News. "It could have taken a lifetime. I never would have stopped," she added.
Lane created fake social media accounts with her daughter's photo and made contact with the people she thought had something to do with the murder. One of those people was William Sotelo, who was part of the gang responsible for Thoebald's death.
Lane was talking to Sotelo online using her daughter's photo and going by the name of 'Angel'. It was when Sotelo appeared to start 'falling' for who he believed to be Angel that Lane broke her cover and told Sotelo she was coming for him.
After this, Sotelo went on the run in Mexico until police tracked him down and brought him back to the U.S. in May 2016.
The information Lane gathered on social media by Theobald's mother helped the police to track him down.
But the questions remain: Why did they do it? Was it a case of being in the wrong place at the wrong time? Or is there more to the story? Hopefully the documentary reveals all.