Teresa Halbach was the victim of a gruesome murder, yet people don’t seem to know much about her story. Thanks to the Netflix docu-series Making a Murderer, people have more insight on the story of her alleged killer, Steven Avery. The prosecutor who handled her case has released a statement that he is going to write a book to tell Halbach’s side of the story.

Former District Attorney Ken Kratz says he will honor Halbach’s memory in his book as he feels the victim’s story has not received the attention it deserves.

In an interview with local Wisconsin news channel WBAY, Kratz said he is “grateful to tell the whole story” because “the one voice forgotten to this point is Teresa Halbach.”

Ken Kratz says he’s writing a book “because the one voice forgotten to this point is Teresa Halbach” https://t.co/Zc6dsXEAIx

— FOX6 News (@fox6now) January 25, 2016

Kratz apparently wrote a letter to Avery’s camp in an attempt to get a confession out of their client but Avery’s legal representative Kathleen Zellner shared the alleged letter on Twitter, saying the ex-prosecutor wanted to profit from a tell-all confession.

Avery served 18 years in prison after a wrongful conviction of rape. Two years since his release, he was charged with the death of Teresa Halbach, a 25-year-old photographer. Avery was convicted of first-degree intentional homicide as a result of her death. Scenes from Making a Murderer hinted on the possibility that the Manitowoc County Sheriff’s Department planted evidence to implicate Avery.

Was Steven Avery’s blood planted in Teresa Halbach’s car? #MakingAMurderer https://t.co/lryL98g0fX

— Making A Murderer (@MakingAMurderer) January 22, 2016

But the question remains: Who really killed Teresa Halbach?

Viewers of the docu-series came up with theories about how the young Halbach died. Some speculate that it was not Avery and his nephew Brendan Dassey who committed the crime, but instead Brendan’s brother Bobby Dassey, and stepfather Scott Tadych.

Other avid viewers claim she was killed by her ex-boyfriend Ryan Hillegas. Hillegas previously testified that he guessed Halbach’s password and hacked into her voicemail after she went missing. Some of the messages were deleted from Halbach’s phone after she disappeared.

Did An Infamous Serial Killer Murder Teresa Halbach And Frame #StevenAvery?https://t.co/6EhfjjZKiZ pic.twitter.com/aRUB5VSLTi

— DiscoveryID (@DiscoveryID) January 24, 2016

Some say one of Avery’s relatives could be the suspect as his brothers were previously charged with sexual assault. Teresa Halbach might have been a victim of serial killer Edward Wayne Edwards, who was known for framing other people for his crimes. Still, some firmly believe Avery was framed by police who neglected to investigate other suspects.