"You squeezed statements out of them after 42 hours of questioning and coercing, without food, bathroom breaks, withholding parental supervision," Ryan's partner says.
"The Reid Technique has been universally rejected. That's truth to you."
Reid and Associates said in the lawsuit that this is a false representation of the method.
They describe that the actual technique is a "structured interview and interrogation process" which does not use intimidation or deny a suspect their rights.
As well as damages and profits, Reid and Associates want the show to be taken off Netflix.
The Reid Technique was founded by former police officer John Reid, in 1974 and has been taught and used in interrogation ever since.
The technique has come under fire since the arrival of DNA evidence. According to the Innocence Project, one-third of prisoners, whose convictions have been overturned through DNA evidence, falsely confessed due to being under pressure or persuaded in an interrogation room.
Joseph Buckley, Reid and Associates president, told Business Insider: "False confessions are caused by investigators stepping out of bounds."