Y: Marshals is an American neo-Western television series created by Taylor Sheridan, David C. Glasser, and Spencer Hudnut. A spin-off and sequel to Yellowstone, it follows former Navy SEAL and rancher Kayce Dutton after he joins a specialized unit of U.S. Marshals charged with protecting Montana. The series examines the interplay of family obligations, professional duty, and the psychological costs of frontline law enforcement. Luke Grimes leads an ensemble cast.