In Christopher Murray’s artfully grim “Sorcery,” justice and revenge walk hand in hand for Rosa (newcomer Valentina Véliz Caileo) after her father is murdered by their employer. 

The tragic tale unfolds on the island of Chiloe, off southern Chile. Young Rosa is a servant at the house of Stefan (Sebastian Hulk), head of a German immigrant family. One morning Stefan finds his entire flock of sheep dead in his fields, blaming the Indigenous locals.