'This is Us' season 2 spoilers, news: Kate and Toby head to Vegas in episode 16

A promotional poster for the NBC television drama series, "This is Us." Facebook/NBCThisIsUs

Kate (Chrissy Metz) and Toby (Chris Sullivan) are headed to Sin City the upcoming episode of "This is Us" season 2.

Titled "Vegas, Baby," this week's episode will focus on the couples. Kate (Chrissy Metz) and Toby (Chris Sullivan) take some time off from wedding preparations to be with their loved ones. The soon-to-be Mr. and Mrs. Damon travel to Las Vegas with their closest pals for their bachelor/bachelorette parties. Meanwhile, Jack (Milo Ventimiglia) and Rebecca (Mandy Moore) mark a special milestone and celebrate their wedding anniversary.

sneak peek for the episode shows Randall (Sterling K. Brown) and his family welcoming Deja (Lyric Ross) back into their home. Toby suits up and hits the street with his male friends, while Kate and her female friends are seen partying at a bar. The clip also hints that despite his death, Jack's story has just begun. The promo ends with a clip of Jack in full battle gear, which suggests his military past before he met Rebecca will be further explored this season.

While heading to Vegas for Kate and Toby's parties, Randall and Beth (Susan Kelechi Watson) will discuss how they will deal with the fact that Deja is back in their home. When asked how long Deja will be in the Pearson household, executive producer Isaac Aptaker told Variety that fans should just wait and see.

 "I will just say whenever that girl is on screen, she is so fantastic and giving such an incredible performance. I'm not saying whose house she's living in, but we do have a lot more of her coming up," he explained. "Are we going into her world? Are we revisiting her in Randall's world? With our show jumping through time, the possibilities are endless."

"This is Us" season 2 airs every Tuesday night at 9 p.m. EST on NBC.

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