“We should have been arrested that night.”

Erik and Lyle Menendez talk for hours with director Alejandro Hartmann from prison in the new Netflix documentary “The Brothers Menendez,” available October 7

On a muggy August night in 1989, police sirens broke the peace of the usually quiet Beverly Hills neighborhood where the Menendez family lived.

Police had just received a hysterical call from a sobbing Lyle Mendendez, then 21, who shouted into the phone, “They shot my parents!”

Police rushed to the $5 million home where they found the bloody bodies of Kitty and Jose Menendez, shot to death in their TV room.

The sons of a wealthy couple, Lyle and Erik (18), told officers that they had returned home after an evening at the cinema when they found carnage inside.

Related: Fact checking Monsters: Did Lyle and Erik Menendez actually have an incestuous relationship? What was good and what was bad in the series

The terrifying events of that night, and what happened before and after them, are the focus of a new Netflix documentary, The Menendez brothers.

The documentary, which airs on Monday, October 7, features audio interviews from prison with Eric, 53, and Lyle, 56, who has not spoken publicly since he and his brother met with Barbara Walters in June 1996, shortly after the end of their first trial in a failed trial.

Looking back, Erik tells director Alejandro Hartmann – over the phone from California’s Donovan Correctional Facility, where he and Lyle are currently incarcerated – that he can’t believe he and his brother weren’t arrested that night.

“The police should have responded and we would have been arrested,” Erik says in the documentary. “We had no alibi. Gunpowder residue was on our hands. “Under normal circumstances, they would test you for gunpowder and we would be arrested immediately.”

Police made no arrests that night. After a lengthy investigation, authorities arrested Lyle and Erik in March 1990, charging them with first-degree murder in the death of their parents, Kitty, 47, a music executive.

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At their first trial in 1993, which ended in a mistrial, the brothers testified that they killed their parents after years of alleged sexual abuse by their Hollywood father, which they say their mother ignored.

In 1996, they were sentenced to life in prison without the possibility of parole.

Related: Discovery of the soul-bearing letter from prison that forced Lyle and Erik Menendez to ‘confess everything’ (exclusive)

The high profile captivated the nation from the moment the public learned about it. It is still fascinating to this day. The sensational case is the subject of the second season of Ryan Murphy’s Netflix series Monsters: The Story of Lyle and Erik Menendezstarring Javier Bardem and Chloë Sevigny.

It’s also the subject of the Mendendez brothers’ official podcast, which debuts on October 9 on Netflix’s You Can’t Make This Up.

On the night of August 20, 1989, hours before they told police they were shocked to discover the bullet-riddled bodies of their parents, the brothers burst into the room where they were watching television and opened fire with 12-gauge shotguns.

Before the brothers left the house, they cleaned up the entire floor of the spent cartridges.

After calling 911, an army of officers, detectives, forensic technicians and others searched the scene for evidence. Erik was sure one of them would find out that he and his brother were the ones who killed their parents.

“There were bullets in my car, gun bullets,” Eric says in the documentary. “My car was in the search area. All they had to do was search my car. They searched everything.”

“And if they just pressed me, I wouldn’t be able to withstand any interrogation. I was in a completely broken and devastated state of mind. I was shocked.”

Prosecutor Pamela Bozanich, who prosecuted the 1993 case, says sarcastically in the documentary: “Beverly Hills is a different kind of police force. They have much better customer service.”

The Menendez brothers will air on Netflix on October 7.

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