Who from 'Yellowstone' is coming to 'Marshals'? Is Monica Dutton dead?

Luke Grimes insists he said "no" three times to returning as Kayce Dutton. But he eventually agreed to lead "Marshals."

Gil Birmingham returns to "Marshals" as Broken Rock Reservation leader Thomas Rainwater.

Mo Brings Plenty returns as Mo to "Marshals"

Brecken Merrill, now 17, returns as Kayce and Monica' Dutton's son, Tate Dutton, in "Marshals."

Luke Grimes as Kayce Dutton and Brecken Merrill as his son Tate Dutton.

Kayce Dutton and family had a happy ending after five seasons of "Yellowstone," dwelling on East Camp. L-R: Kelsey Asbille as Monica Dutton, Brecken Merrill as Tate Dutton, Luke Grimes as Kayce Dutton.

Monica Dutton (Kelsey Asbille) has not been featured in any trailers or material for "Marshals," and is not in the new CBS series. Spoiler alert on the next slide.

Kelsey Asbille as Monica and Luke Grimes as Kayce in happier times on "Yellowstone." However, Monica Dutton dies of cancer before "Marshals" begins, as the March 1 premiere makes clear. Kayce is still haunted by the loss.

"Marshals" production designers completely rebuilt East Camp in Utah, where the first two seasons of "Yellowstone" were shot. Stepping onto the rebuilt set was trippy for Grimes.

Could Beth Dutton (Kelly Reilly) and Rip (Cole Hauser) appear on "Marshals"? Grimes says an appearance is not imminent, but possible. "They set it up contractually that it could happen," Grimes says. "So, it's a possibility." The duo is set to appear in the "Yellowstone" spinoff, "The Dutton Ranch."

Jamie Dutton (Wes Bentley) was killed and quietly disposed of in "Yellowstone" Season 5. He will not appear in "Marshals." But maybe Kayce Dutton could investigate the strange disappearance? "It would be a good storyline," says Grimes.