The anticipation for Marshals, the newest and most action-packed spin-off in the Yellowstone universe, is at an all-time high. The final trailer reveals a story that’s not just full of adrenaline and gunfights, but heartbreak and loss.

Here’s everything you need to know before Marshals premieres.

One of the most emotional mysteries centers on Monica, Casey’s wife. For years, fans watched Monica and Casey’s tumultuous love story unfold in Yellowstone. But the trailer hints at a tragic end: Monica seems to have disappeared from the universe. We see a figure in Casey’s bed, covered with a white sheet and surrounded by medication, suggesting a death from illness.

Casey stands by a grave on a hill, and in another scene, a woman resembling Monica approaches him at night, her face hidden. The clues point toward Monica’s death, likely from a serious illness, and actress Kelsey Asbille’s absence confirms she won’t appear in new scenes—her stunt double will fill in for a few moments. Monica’s loss will become the defining motivation for Casey, and flashbacks may remind viewers of their love.

Casey’s journey in Marshals is shaped by this tragedy. After finding peace at East Camp in the Yellowstone finale, Monica’s untimely death sends him spiraling.

In a familiar pattern from his Navy SEAL days, Casey channels his grief into hunting criminals as a US Marshal. Pete Calvin, played by Logan Marshall-Green, is Casey’s former SEAL team leader and the one who calls him to join the Marshals. Pete will stand by Casey during his darkest days, and their bond will bring depth to the action scenes, showing solidarity and friendship.

Monica’s death affects more than just Casey—it devastates their son Tate. Tate has endured trauma throughout Yellowstone: kidnapping, violence, and family drama. Now, he faces the loss of his mother.

The trailer suggests Tate’s psychology will be tested, and Casey will need to step up as a father. Having spent little time with Tate in Yellowstone, Casey’s struggle to connect will be a major theme. Viewers may see Tate running away or hunting on his own, highlighting the disconnection and pain between father and son.

Support for Casey comes from Thomas and Mo, characters who helped him grow spiritually in Yellowstone. They’ll guide Casey through grief and offer advice on raising Tate.

If Tate refuses to live with Casey, Thomas might become his caretaker, filling the father figure gap left by John Dutton’s loss. Native American culture, which Casey internalized, may now transform Tate as well.

New love interests add intrigue to Marshals. Andrea, a Bronx native played by Ash Santos, is exiled to Montana for speaking out in her previous job. Her ethics and mysterious past make her fascinating, and she’s shown to be interested in Casey.

Belle, played by Ariel Kebell, is a former ATF agent who loves undercover work. Belle’s similarity to Monica suggests she may become Casey’s new partner, and a love triangle between Casey, Andrea, and Belle is likely. However, Casey’s grief will make moving on slow and difficult.

Marshals aims to distance itself from Yellowstone, even dropping the “Y” from the title. Few Yellowstone characters are expected to appear, except possibly at Monica’s funeral. Tate may seek comfort from Beth and Rip, but his bond with Thomas and Mo is stronger. The series promises to explore these relationships and emotional journeys when it premieres on March 1st on CBS.

Marshals is set to deliver not just action, but powerful drama about loss, healing, and family. What do you think will happen next? Share your thoughts in the comments and get ready for an unforgettable ride.