"Alberto Robles, a young doctor, is faced with the decision to surrender to a life full of comforts and luxuries or to continue dedicating himself body and soul to serving those who need it most."
Arturo de Córdova
as Doctor Alberto Robles
Pedro Armendáriz
as Roque Suazo
Estela Inda
as Soledad
Domingo Soler
as Padre Juan
Carlos López Moctezuma
as David Acosta
Jaime Fernández
as Mauro
Gilberto González
as Delfino Ruiz
Francisco Jambrina
as Dr. Alfonso Gómez Ugarte
Hernán Vera
as Presidente municipal
Rogelio Fernández
as El novio
José Baviera
as Médico hospital
José María Linares Rivas
Manuel Arvide
Juan Orraca
Lupe Carriles
as Enfermera recepcionista
Joaquín Roche
as Don Cirilo
Felipe de Flores
as Enfermero hospital
Rosaura Revueltas
as Madre de niño operado
Mario Humberto Jiménez Pons
as (uncredited)
Guillermo Calles
as Toribio, curandero (uncredited)
Enrique Carrillo
as Prisciliano Sánchez (uncredited)
Magdalena Estrada
as Clienta de tendero (uncredited)
Emilio Garibay
as Compadre (uncredited)
Velia Lupercio
as Invitada a fiesta de boda (uncredited)
José Muñoz
as Manuel, tendero (uncredited)
Lucrecia Muñoz
as Camila, la novia (uncredited)
Ignacio Peón
as Anciano chismoso (uncredited)
Roberto Gavaldón
Director
Charles L. Kimball
Editor
José B. Carles
Sound Director
Gabriel Figueroa
Director of Photography
Screenplay
Rodolfo Landa
Producer
Francisco Domínguez
Original Music Composer
Salvador Lozano Mena
Production Design
Galdino R. Samperio
Sound Re-Recording Mixer
Ignacio Romero
Camera Operator
José Revueltas
Writer