This Is Us Season 3 Episode 18, titled "Her," will serve us this chapter's finale. A lot is about to happen in this installment from Randall (Sterling K. Brown) and Beth's (Susan Kelechi Watson) relationship to Rebecca's (Mandy Moore) health. With all the things happening in the Pearson family, it is a big question how the season finale will tie all the loose ends. 

From the looks of it, This Is Us Season 3 Episode 18 will be about Rebecca. There are hints that the Pearson matriarch's health is deteriorating since the previous season finale. In Season 2's final episode, a family visited somebody in the future and called this someone "her." Later, it was confirmed to be Rebecca.

There are theories This Is Us Season 3 Episode 18 will reveal Rebecca has Alzheimer's disease or dementia, but Moore already debunked the claim. "I love how people are sleuths. I love that!" the 34-year-old star said, via Express.co.uk. "That's a good theory. Not true, but I like it."

Talking about her character's future, Moore admitted she was not surprised to see what happened to Rebecca on This Is Us Season 3 Episode 18. She even commended the show's creator Dan Fogelman for being a genius, and she totally believed and understood why it has to occur.

Fogelman, on the other hand, hinted there would also be a huge focus on Randall and Beth's relationship on This Is Us Season 3 Episode 18. Fans are about to get a lot of answers to their questions about the two's romance. Their marriage has been on the rocks throughout the season, and some viewers even think they will be heading for divorce.

With all the twists and turns of events, Fogelman told Glamour This Is Us Season 3 Episode 18 would be very big. "It feels like a real midpoint for us, and I'm very excited about it," he said. "The last five minutes of it are as big and sprawling and epic as we get."

Although Fogelman tried his best not to spill all the details about This Is Us Season 3 Episode 18, he hinted Sophie (Alexandra Breckenridge) would not be in the finale. So, what happened after her coffee date with Kevin (Justin Hartley) would not be explored yet.

There is more to tackle on the two's storylines. And if things will be discussed after This Is Us Season 3 Episode 18, Fogelman said it depends on what will happen.

This Is Us Season 3 Episode 18 will be set in the future. The finale episode will be out on Tuesday, April 2, on NBC.