The Menendez Brothers’ Case Under Review: What to Know.

U.S.|The Menendez Brothers Could Still Be Released From Prison. Here’s What to Know.

Over 35 years ago, Lyle and Erik Menendez — then 21 and 18 years old — walked into the den of their Beverly Hills mansion and fired more than a dozen shotgun rounds at their parents, killing them both.

In recent years, the brothers have been thrust back into the media spotlight thanks to the revelation of new evidence, an army of social media defenders and a recent television series and documentary examining the crime and their trials.

Now, after serving decades of a life sentence without the possibility of parole, there are three legal pathways that could lead to the brothers regaining their freedom, including a possible resentencing, and a clemency petition made to Gov. Gavin Newsom of California.

The new Los Angeles County district attorney, Nathan J. Hochman, who was elected on promises to take a tougher approach on crime, has said that he opposes releasing the brothers, and has asked a court to withdraw a resentencing petition put forward by his predecessor. But a similar effort initiated by a court is expected to go forward.

A procedural hearing on their bid for resentencing is scheduled for Friday, with more substantive hearings on the issue likely to be held later this month.

Here’s what to know about the case:

There are three active legal paths that could lead to the brothers regaining their freedom.

The first, a resentencing track, was initiated by a court, and has hearings scheduled for later this month. The former Los Angeles County district attorney, George Gascón, had separately filed a petition to push for resentencing, but the new district attorney, Mr. Hochman, is asking the court to withdraw that petition.