The episode was filmed almost entirely in this historic town. The stunning Puente Nuevo bridge is a central visual landmark as Ava and Mary explore the area.
Ava spots a wraith demon inside a local man. In a tense confrontation at a local butcher shop, Mary forces Ava to take the lead. After Mary is temporarily incapacitated, Ava kills the demon using Mary’s Divinium Dagger . Warrior Nun s01e06
Mary shares her suspicion that Cardinal Duretti was involved in Sister Shannon's death to install a more "loyal" Warrior Nun. The episode was filmed almost entirely in this historic town
She appears briefly at the end to collect Mary, notably showing understanding when Mary informs her that Ava is staying behind to help the villagers. Warrior Nun s01e06