Skip to main content

‘Making a Murderer’ Witness Blaine Dassey Says He Lied During Trial Testimony


Making a Murderer, Brendan Dassey, Kathleen Zellner, Dean Strang, Jerry Buting

A witness in the trial of convicted killer Steven Avery claims he lied on the stand.

Blaine Dassey, Avery’s nephew, says he was pressured to lie by authorities but is now telling the truth about what happened around the time freelance photographer Teresa Halbach disappeared in 2005. Blaine Dassey’s brother, Brendan, was convicted of helping Avery kill Halbach. The Dassey and Avery stories became famous through the Netflix film ‘Making a Murderer.’

In the new affidavit filed Friday, Blaine Dassey said that his testimony at Avery’s trial was “not true” when he described seeing a fire in Avery’s burn barrel on October 31, 2005. That is the day Halbach was last confirmed alive. Prosecutors argued that Avery killed her and burned her remains and effects in the burn barrel and/or in a nearby burn pit.

Blaine Dassey also says the flames in Avery’s bonfire later that night were about three feet high. “The police tried to pressure me into saying that the flames of the bonfire were much higher, so at trial I testified that the flames of the bonfire were 4-5 feet high but that testimony was not true,” Dassey now says in a sworn affidavit. “The police put the height of the flames in my head and I agreed to it,” Dassey explained.

Furthermore, Blaine Dassey now claims he saw his brother, Bobby, drive a “bluish or greenish vehicle heading toward Mishicot” on State Highway 147 on the day Halbach disappeared. Highway 147 runs along the north side of the Avery salvage yard. Blaine said Bobby Dassey was not home the rest of the evening Halbach disappeared.

Avery’s defense attorney, Kathleen Zellner, argued through an attached supplemental motion that the strange vehicle Blaine claims his brother Bobby was driving was “the same color as” Halbach’s Toyota RAV-4. Halbach’s vehicle was later found hidden at the Avery salvage yard by volunteer searchers the weekend immediately following Halbach’s disappearance. Zellner seems to suggest, but does not directly state, that Blaine might have seen Bobby driving Halbach’s SUV. Zellner also says other witnesses saw the SUV near the site of an old dam along Highway 147 not far from the Avery salvage yard and that the authorities did not properly investigate such leads.

Those implications, if true, would cast doubt on the state’s theory of the case that Brendan Dassey and Steven Avery killed Halbach and that Halbach’s car remained under Steven Avery’s control between the date of her death and the date the car was discovered.

Blaine Dassey also said Bobby had primary access to a family computer which defense attorney Zellner argues was full of violent pornographic images depicting the rape and torture of women with an “uncanny resemblance” to Halbach. Blaine Dassey said he only used the computer to do homework and sometimes to send instant messages. He said he “[a]t no time” searched for pornography or for news reports about the Halbach case from the computer. Zellner believes the pornography on the computer was primarily viewed by Bobby Dassey and that it is evidence Avery should have been able to use at trial to deem Bobby Dassey an alternate suspect.

In the same court filing, Avery himself says Bobby Dassey might have been involved in the Halbach murder. Zellner further pointed to computer records (including the pornography and sexually-explicit chat logs), cell phone records, and inconsistent prior statements to cast Bobby Dassey as having potential involvement with the crime.

Avery maintained his innocence after Halbach photographed a vehicle at his family’s salvage yard in 2005 and then disappeared. Several days later, her camera, phone, electronics, SUV, and charred remains were discovered in a burn pit and burn barrel near Avery’s trailer.

Avery and his nephew Brendan were convicted in separate 2006 trials of murdering Halbach.

Avery was famous regionally before the 2005 Halbach disappearance. After eighteen years behind bars, he was exonerated of a 1985 rape charge which DNA evidence later proved he did not commit.

No persons other than Avery and Brendan Dassey have been charged with a crime in relation to the Halbach case.


Follow Aaron Keller on Twitter:  @AKellerLawCrime.

[Image of Steven Avery via screen capture from WGBA-TV.]

Have a tip we should know? [email protected]

Filed Under:

Follow Law&Crime:

Aaron Keller holds a juris doctor degree from the University of New Hampshire School of Law and a broadcast journalism degree from Syracuse University. He is a former anchor and executive producer for the Law&Crime Network and is now deputy editor-in-chief for the Law&Crime website. DISCLAIMER:  This website is for general informational purposes only. You should not rely on it for legal advice. Reading this site or interacting with the author via this site does not create an attorney-client relationship. This website is not a substitute for the advice of an attorney. Speak to a competent lawyer in your jurisdiction for legal advice and representation relevant to your situation.