Cast
- José Nieto as Álvaro Velasco, 'Cabeza de Hierro'
- Ana Mariscal as Aurora
- María Martín as Irene
- Adriano Rimoldi as Mosca
- Ángel de Andrés as Polilla
- Antonio Bofarull as Calabaza
- José Rivero as Doctor Hedian
- Camino Garrigó as Doña Luisa
- Fernando Galiana as Julio Enrique
- Mary Santpere