
Naomi Wirther, known for her role in “Slow Horses,” is reportedly joining the cast of the new “Harry Potter” project as Madam Malkin. Her character runs Madam Malkin’s Robes for All Occasions, a shop in Diagon Alley that sells robes for wizards and witches. The shop is a familiar location from J.K. Rowling’s books, first appearing in “Harry Potter and the Sorcerer’s Stone” when Hagrid takes Harry to buy his Hogwarts uniform. It continued to appear throughout the series, and was even the setting for a dramatic confrontation between Harry and Draco Malfoy in “Harry Potter and the Half-Blood Prince.”