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In the cold open on Saturday’s show, De Niro as Mueller appeared as a “boogeyman” in Eric Trump’s closet as his older brother reads him a bedtime story.

“Don’t be scared, it’s just me, Robert Mueller, your dad’s friend from work,” he said.

De Niro as Mueller warns Eric Trump, played by Alex Moffat, that some of his dad’s friends may end up in prison, referring to Michael Cohen, the president's longtime personal lawyer, as “federal inmate 10358.”

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He reassures Eric Trump that the country will be “just fine” because it’s “full of good people.”

“Yeah, good people like my dad!” Moffat as Eric Trump responds.

“Well, let’s put a pin in that,” De Niro’s Mueller says.

The sketch follows new court filings from Mueller and federal prosecutors in New York that provided new insight into links between Trump campaign officials and Russia.

“Mr. Mueller, people say you’re the worst thing to ever happen to my dad,” Eric Trump says in the sketch.

But De Niro, prompting cheers from the audience, pushes back: “No Eric, getting elected president was the worst thing that ever happened to your dad.”