Despite worldwide spotlight on Steven Avery’s case brought about by Making A Murderer that included a surge of support for his defense, he still sits in jail for the murder of Teresa Halbach. Now Steven Avery’s mother, Dolores Avery, has a new unthinkable reason to defend her son’s innocence. She believes that Teresa Halbach is not dead.

Dolores appeared on the The Hill-Man Morning Show on WAAF in Boston on Wednesday, where she presented the improbable idea. When asked who she believed killed Halbach, Dolores answered, “I don’t know, but I wish the person could come forward. I don’t think she’s even dead. I don’t think so.”

The radio host then pointed out that Halbach’s bones were found in Steven Avery’s backyard, to which she replied, “How do you know if them were her bones?”

The host answered that forensic testing showed they were Halbach’s remains. “[Then] somebody planted them,” Dolores said. “They planted the key.”