‘Yellowstone’s Kelsey Asbille (aka Monica Long Dutton) chats with ET’s Cassie DiLaura ahead of the show’s return to Paramount Network on Nov. 10. Kelsey calls the final episode ‘epic,’ but won’t promise a happy ending for Monica and Kayce (Luke Grimes). She also praises co-star Kelly Reilly (aka Beth Duncan), and reacts to fan theories that creator Taylor Sheridan shot multiple endings.