Actor Logan Marshall-Green joins "Y: Marshals" as Pete Calvin, a new "Yellowstone" spinoff starring Luke Grimes.

Logan Marshall-Green has joined the cast of the "Yellowstone" spinoff, "Y: Marshals," where he will play Pete Calvin, a friend from Luke Grimes' character Kayce Dutton's military past. The series, set to premiere in spring 2026 on CBS, will follow Kayce as a U.S. Marshal in Montana. The show is part of the Yellowstone universe created by Taylor Sheridan and will also likely feature Kayce's family.