Netflix's docuseries Making a Murderer makes a pretty good case that Steven Avery, who is currently serving a life sentence for murder, was framed for killing Teresa Halbach, but never presents an alternative theory as to who may have committed the crime.
According to TheWrap, court documents indicate that Avery has a theory of who may have been responsible: some of his own family members.
The documents, which were filed in 2009, contain statements from Avery claiming that his brothers Charles and Earl, as well as nephew Bobby Dassey and brother-in-law Scott Tadych, could have potentially killed Halbach, TheWrap reports. Avery cites his brothers' criminal histories (several women have accused Charles of assault, and Earl was charged in 1995 with sexually assaulting both of his daughters).
Avery's nephew Brendan Dassey, an alleged accomplice in the rape and murder of Halbach, was also convicted and is currently serving a life sentence with the possibility of parole. In the 2009 documents, Avery claims that Brendan's brother Bobby has a "suspicious" alibi for the day Teresa was murdered, and had scratches on his back around that time that he said were given to him by a puppy.
During Brendan Dassey's trial, the court prohibited the defense from presenting evidence that someone other than Dassey was responsible for Halbach's death.
Steven Avery was convicted and sentenced to life in prison in 2007 for the 2005 murder of Halbach, just four years after he was released from prison because DNA evidence exonerated him from a rape conviction 18 years prior. Making a Murderer raises the question whether Avery was framed for Halbach's murder as he was preparing to file a sizable lawsuit against area law enforcement officials. On Tuesday, the filmmakers revealed that a juror recently told them that they believe Avery was framed by law enforcement and was wrongly convicted.