In Fresno, California, the latest installment of 20/20 unveils groundbreaking evidence in a chilling cold case that haunted Central California for years.

“A murderer was literally roaming free in the Fresno area,” reports Juju Chang.

ABC correspondent Juju Chang delves into the 1996 murder case of Debbie Dorian.

Dorian, a 22-year-old recent graduate of Fresno State, was tragically discovered dead in her northeast Fresno apartment by her father. It took 23 years for law enforcement to finally identify her killer.

Despite the passing years, investigators like Vince Zavala remained steadfast in their pursuit of justice.

“Even after he retired from Fresno law enforcement, he stayed on unpaid to continue to follow leads. In fact, he was there the day that they arrested Nickey Stane,” Chang said.

In Friday’s episode 20/20, you will see the moment Zavala’s hard work paid off, as he connected the dots and identified Nickey Stane.

Exclusive body-cam video will show you the moment police arrested him.

“Well, you’ll see Vince Zavala roll up onto this fast-food restaurant in a mall that Nickey Stane is working at, confront him, and then you see additional surveillance video of the interrogation…” Chang said.

As investigators closed in on Stane after decades, he tried one last time to throw them off.

You will hear what he said.

“It was a fascinating cat and mouse game that was going on from the very moment that Vince made contact with him all the way through the interrogations in the interrogation room…” Chang said.

You will also meet one of Stane’s survivors. She and others were sexually assaulted by him in Visalia years after Debbie’s death.

She’s only ever been identified as Jane Doe #1, but now she’s revealing her identity.

“‘Survivor’ is exactly the right word, given how incredibly feisty she was. She had a gun pointed at her, and she told the perpetrator, ‘You’re not going to get away with this.’” Chang said.

With Stane now in prison, JuJu says Friday’s episode of 20/20 gives Debbie and the survivors a final word.

“The idea that all these people were affected by the crime and that we get a chance to remember how she lived is really a tribute to all of the storytelling that we do here at 20/20,” she said.

Chang says she was able to get in touch with Nickey Stane, but he declined to comment.

Stane is now serving his life sentence at the California Medical Facility in northern California due to his age.