The Making a Murderer co-creators are fighting back against claims they left out key evidence in the docuseries.

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Making a Murderer has received some backlash due to allegedly leaving out information that may have called Steven Avery's innocence into question. Ken Kratz, the special prosecutor featured throughout the docuseries, has outright said that it is more of a "defense advocacy piece" than a documentary.

But co-creators Laura Ricciardi and Moira Demos spoke with ABC's Nightline recently and discussed their main purpose in following the Avery case.

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"We were there because we wanted to ask bigger questions about the system," Ricciardi said.

"What the question is, is [Avery] guilty beyond reasonable doubt? And is the process fair? Can we trust the verdict?" Demos added.

The docuseries follows Avery and his multiple convictions, particularly in the 2005 murder of photographer Teresa Halbach. He and nephew Brendan Dassey were charged with Halbach's murder and imprisoned in 2007.

Ricciardi fully admitted that they did leave out evidence, suggesting the constraints of telling a condensed story forced them to not include some aspects.

"It would be impossible for us to include all the evidence that was presented in the trial," Ricciardi noted. "That's called a trial. What we made was a documentary."

Nightline's full interview with Ricciardi and Demos airs tonight at 12:35 a.m. ET/PT on ABC.

Making a Murderer is currently available in its entirety on Netflix.

Tags: Making a Murderer television netflix