Guillermo Del Toro Mentoring Muschietti’s Mama Guillermo del Toro is in talks to produce Andy and Barbara Muschietti’s debut film Mama. Based on Muschiettis’ Spanish-language short, the English language remake will centre on two sisters fleeing from a ghostly woman who they believe to be their mother. The Muschietti siblings, who are associated with the Madrid-based production firm Toma Films, are also working on the script for horror movie Mama.