Melanie Scrofano is back in her iconic title role as this quirky, female-driven action-horror-comedy-supernatural-Western returns to finish out its fourth and final season. As the action resumes in executive producer Emily Andras' cheeky series adaptation of a comic-book series by Beau Smith, Wynonna battles demons both external and internal, with an assist from the immortal Doc Holliday (Tim Rozon), Wynonna's sister Waverly (Dominique Provost-Chalkley), and Nicole Haught (Katherine Barrell), Waverly's new fiancée.