At most offices, water cooler talk revolves around annoying company rules or the quality of the snacks in the break room. But at Fox News, they gossip about the Murdochs, the family who controls Fox’s parent company.

The future of Fox News – and the rest of the Murdoch media empire – is at stake in a trial this week in Reno, Nevada. Rupert Murdoch wants to change his will to consolidate his eldest son’s power.

The Murdoch family is headed to probate court in Nevada on Monday as Rupert Murdoch looks to amend his trust, which holds major stakes in Fox Corp. and News Corp, according to the Wall Street Journal.

Fox News quietly fired politics editor Chris Stirewalt. He had made the decision two months earlier to call Arizona for Joe Biden in the 2020 election. Media titan Rupert Murdoch was irate at the judgment.

The conservative slant of Murdoch’s media empire—which includes Fox News and the Wall Street Journal—could be under threat amid a high-stakes succession battle.

When Rupert Murdoch, the 93-year-old media mogul, quietly decided last year to upend the irrevocable family trust that governs who will control his sprawling global media empire after his death, the move ignited an intense feud among his children.

Next week, a probate official will hear evidence in a clash between Rupert Murdoch and some of his children over who should control his media companies after he dies.