Donald Schalchlin is scheduled to stand trial later this summer for the deaths of his mother and sister.
Today Joshua Tucker walked into Benton County Court. Tucker pleaded guilty to the murders and is now serving 40 years in prison.
Schalchlin's defense team wants conversations between Tucker and social workers to use as evidence.
Schalchlin's attorney says the transcripts will prove Tucker is paranoid, delusional, has memory lapses, and is obsessed with death, and can't be considered a credible witness.
Social workers argue the conversations are confidential and if released could hurt other cases.
Judge Craig Matheson ordered social workers to turn over the 12 volumes of transcripts.
Matheson will review the conversations and decide what may be turned over to the defense.
The review will push back Schalchlin's trial to late June.