Cast
- Francesco Salvi as San Francesco
- Giulio Brunetti as Federico II
- Giorgio Cantarini as Giuseppe
- Enrico Lo Verso as Matematico di corte
- Claudio Angelini as Vescovo
- Eleonora Mazzoni as Sara
- Francesco Meoni as Giovanni da Palermo
- Alessandro Prete as Guardiano delle uova
- Laurentina Guidotti as Costanza D'Altavilla
- Aldo Milea as Alchimista