“Country Strong” filmmaker Shana Feste is back in business with Sony Pictures, which has tapped her to write and direct a feature based on Carolyn Turgeon’s novel “Mermaid: A Twist on the Classic Tale.”Sony has acquired film rights to “Mermaid,” a dark retelling of Hans Christian Andersen’s “The Little Mermaid.” Studio has set Tobey Maguire’s Material Pictures and Jenno Topping to produce. Duo recently produced Feste’s “Country Strong” for Screen Gems. “Mermaid” follows a princess who, in order to save her ravaged kingdom, sets out on a dangerous journey to marry the prince of her rival kingdom, not knowing that a beautiful mermaid has fallen for the same man and sacrificed everything to be with him. Nick Reimond will oversee for Material, while Andrea Gianetti will oversee for Sony. Feste previously wrote and directed Pierce Brosnan and Carey Mulligan in the indie drama “The Greatest.” She is repped by CAA, Madhouse Entertainment and attorney Sean Marks. ICM repped the book rights.