John P. Johnson/HBO Warning: Major spoilers ahead for the "Westworld" season two finale, "The Passenger." "Westworld" star Katja Herbers made a surprising reappearance on the second season finale of HBO's hit sci-fi/western series. After her character's tragic death at the hands of her own father on the season's ninth episode, Herbers returned for a special post-credits scene.See the rest of the story at Business InsiderNOW WATCH: The world is running out of sand — and there's a black market for it nowSee Also:'Westworld' star Sela Ward reveals the biggest challenge of getting 'thrown in the middle of a storm' this season'Westworld' star on the traumatic turn of events with William and why it likely disproves a favorite fan theory10 details you might have missed on the latest episode of 'Westworld'