Reparto (15)
Lone Fleming
Betty Turner
César Burner
Roger Whelan
María Elena Arpón
Virginia White
José Thelman
Pedro Candal
Rufino Inglés
Insp. Oliveira
Simón Arriaga
Morgue keeper
Francisco Sanz
Prof. Candal (librarian)
Juan Cortés
Coroner
Andrés Isbert
Personaje desconocido
Antonio Orengo
Train engineer
José Camoiras
Personaje desconocido
María Silva
Maria
Carmen Yazalde
Sacrificed maiden (uncredited)
Pedro Sempson
Train engineer (voice) (uncredited)
Verónica Llimerá
Nina