Petra Volpe Nadja Klier EXCLUSIVE: UTA has signed Swiss-Italian writer and director Petra Volpe for representation in all areas.Volpe is well known for writing 2015 family-drama Heidi, whose $38M box office makes it one of the most successful Swiss films ever. She most recently made her English-language debut with Frank & Louis, starring Kingsley Ben-Adir and Rob Morgan, which she co-wrote and directed. The film premiered at the 2026 Sundance Film Festival where it was well received by critics.