World News Tonight Prime With David Muir Season 12 Episode 337 Wed, Dec 17, 2025

Trevor Ault reports on Nick Reiner's first court appearance after being charged with first-degree murder in the deaths of his parents, Rob Reiner and Michele Singer Reiner, as the family speaks out; two days after the fatal shooting of MIT professor Nuno Loureiro, Aaron Katersky has details on what sources say about investigators having no suspect or motive; Mary Bruce has the latest on Pres. Donald Trump's address to the nation amid concerns about the economy and affordability; and more on tonight's broadcast of World News Tonight with David Muir.