Shane Nyman

USA TODAY NETWORK-Wisconsin

As we inch closer to the one-year anniversary since the release of "Making a Murderer," it seems the questions regarding its subject matter — the 2007 murder convictions of Steven Avery and Brendan Dassey — only continue to pile up.

Another that's emerged this month: Could a Swedish scientist play a key role in determining whether Avery was framed?

Radio Sweden has a six-minute piece on Kirsty Spalding, whose viewing of the Netflix series led her to reach out to Avery's attorney Kathleen Zellner about a technique that possibly could show whether the blood stains found in Teresa Halbach's were planted.

Spalding's work includes the use of a sort of carbon dating technique that can determine when a cell was created. This could indicate whether the blood from Avery that was found in the victim's vehicle is from the 1990s or from 2005. This blood, of course, was an important piece of evidence in the case against Avery.

RELATED: State: Dassey conviction should stand

RELATED: Zellner on familiar path in effort to free Avery

Spalding and Zellner have been in contact, according to the report, and they are waiting for the go-ahead from the courts to get access to the blood sample. They hope to be able to move ahead in the next month.

"I don't really have an opinion of whether Steven Avery is innocent or guilty," Spalding says in the piece. "I have more of an opinion of whether I think there's been planted evidence or not and ultimately that's all this analysis will tell us is whether or not this evidence is planted."

Other 'Making a Murderer' headlines

► John Ferak of USA TODAY NETWORK-Wisconsin explained this week that Zellner's working in familiar territory with the Avery case. Zellner's first-ever wrongful conviction case — freeing Joe Burrows from death row — offers a window into the techniques she's apt to undertake in trying to prove Avery's innocence.

"There are similarities between the Burrows and Avery cases," Zellner wrote USA TODAY NETWORK-Wisconsin. "Both men were targeted by law enforcement from a young age. Both cases involve a coerced confession and both cases have an alleged crime scene that does not make sense."

► Now that the Wisconsin Department of Justice filed its brief arguing that Brendan Dassey's confession was voluntary — and his conviction should stand — a series of legal steps await, reports Alison Dirr of USA TODAY NETWORK-Wisconsin. She looks at the next steps in Dassey's fight for freedom after Wednesday's filing.

TIMELINE: History of the Steven Avery case

► Dan O'Donnell, host of "The Dan O'Donnell Show" on iHeartRadio and host of Common Sense Central on NewsTalk 1130 WISN, took part in a Reddit AMA session this week. O'Donnell previously released a 10-part series called "Rebutting a Murderer," moving episode-by-episode through the Netflix series and pushing back against the theories of a conspiracy. The AMA was a chance for Avery supporters to go head-to-head with somebody in the opposite camp.

Shane Nyman: 920-996-7223, snyman@postcrescent.com or on Twitter @shanenyman