Undercover police officer Dan Hogan infiltrates a ruthless gangster mob. Hogan’s main objective is to identify the real criminals responsible for the murder of his younger brother. Along the way, he teams up with a woman named Nora Brady, whose own brother was falsely convicted of the same murder. Spanish version of Those Who Dance (1930).

• Warner Bros. Pictures
• Antonio Moreno
• Maria Alba
• Pablo Álvarez Rubio
• Tito Davison
• Alfredo del Diestro
• Martín Garralaga
• María Teresa Renner
• José Soriano Viosca