Luke Grimes, the star of the TV series “Yellowstone,” has passed away suddenly md20

Is there a vibe between Kayce and Andrea on Marshals?

The teammates started off on the wrong foot and seemed to be at odds when the Yellowstone spinoff series premiered, but Kayce (Luke Grimes) has warmed up to Andrea (Ash Santos) — or maybe it’s the other way around.

Regardless, Santos, 32, tells PEOPLE that there’s a “slow burn” happening for the pair. “It’s really unexpected,” she says on the red carpet at CBS Fest 2026 on April 15.

“They feel so polar opposite when they meet, but then they slowly start finding that they have so much in common,” Santos says. One thing the characters have bonded over is their shared grief — Kayce’s over the death of his wife, Monica (Kelsey Asbille), Andrea over her father’s death.

The dynamic between the teammates is “one of those things where it gets more interesting the longer that you watch,” Santos teases.

“There’s so many unexpected things that happen that will, I think, make the audience want more,” she says.

Last year, before Marshals premiered, Grimes, 42, told PEOPLE that the spinoff would “find a whole new world” for his character after the Yellowstone finale. Though he didn’t address the creative decision to kill off Monica, nor the possibility of Kayce finding a new romance, he said the concept for the show “really roped me in.”

“We definitely wanted to make sure to give it a real story and make it interesting and make it believable,” he said. “If it was just like, ‘well, he’s happy’ — we’re just going to watch him be happy? That’s not very cool.”

In the latest episode, which aired on April 17, the stakes were higher than ever for Santos’ character, as Ash was abducted in a smash-and-grab, leaving her teammates — Kayce, Belle (Arielle Kebbel), Miles (Tatanka Means) and their captain, Cal (Logan Marshall-Green) — rallying together to find her and rescue her.

The episode ended on a cliffhanger, as the Marshals team was out-manned and overpowered after arriving at the farm where they thought Andrea was being held.

Fans will have to tune in next week to find out Andrea’s fate — and see if her abduction rattles Kayce.