The first two seasons of “Making a Murderer,” the immensely popular Netflix docuseries about the controversial Steven Avery case, are already in the books.

But another documentary about Avery’s legal odyssey surrounding the 2005 murder of 25-year-old photographer Teresa Halbach is almost finished. “Convicting a Murderer,” a 10-part series, pledges to take a broader look at the Avery case than “Making a Murderer.”

“We wanted to be as even-handed as possible,” said documentary filmmaker Shawn Rech, who is the director and executive producer of the project. The series is being produced via Transitions Studio of Cleveland, Ohio.

The documentary, which has yet to be sold, was filmed largely in Appleton during the past two years, Rech said.

“I’m excited with what we have,” Rech said this week. “There’s a lot packed into this.”

Avery, 57, is serving life in prison after being found guilty of murdering Halbach, who went missing after visiting the Avery salvage yard for a photo assignment. Avery’s nephew, Brendan Dassey, 30, also is serving life in prison in connection with Halbach’s death. Avery is being held at the state prison in Waupun, while Dassey is at the Oshkosh Correctional Institution.

Avery has an appeal pending in Wisconsin’s court system. Attorneys for Dassey continue to seek a favorable clemency ruling from Gov. Tony Evers, despite Evers’ recent announcement that he wouldn’t grant early release to Dassey because the case didn’t meet the state’s guidelines.

Meanwhile, Rech is working on graphics and music for “Convicting a Murderer.” Filming has been completed, he said.

RELATED: 'Making a Murderer' vs. 'Convicting a Murderer': Dueling docs focus on Steven Avery case

RELATED: New documentary on Steven Avery in the works

RELATED: Is Steven Avery's appeal over in Teresa Halbach killing? Not by a long shot.

Rech said the release date for the series will be up to the licensee or the distributor. He said he is confident that a buyer will come forward. Originally, the series was scheduled to hit the airwaves in 2019, but it was pushed back to allow for editing and final touches.

“We’re choosing quality over speed,” he said.

Rech said previously that “Convicting a Murderer” will place more of an emphasis on the perspective of law enforcement than “Making a Murderer.”

Among the interviewees are former prosecutor Ken Kratz, who has been a relentless critic of “Making a Murderer.” Kratz obtained convictions against Avery and Dassey, during separate trials in 2007.

Rech said “Convicting a Murderer” will examine the impact that the Netflix series had on certain investigators.

“People were hurt and damaged by this,” he said.

Andy Thompson can be reached at 920-996-7270 or by email at awthompson@postcrescent.com. Follow him on Twitter @Thompson_AW.