An upstanding doctor is transformed into a cold-blooded serial killer after being attacked by terrorists in Vietnam.

Roberto 'El Flaco' Guzmán
as Roberto 'Robert' Smith (as Roberto Guzmán)

Guillermo Quintanilla
as Rúben Aguirre

Angélica Soler
as Martha de Smith

Marisol Cabrera
as Leticia Alcocer

Nayeli Pellicer
as Ruth Ávila

Armando Sandoval
as Ricardo

Lilian Tapia
as Maestra (as Lillyan Tapia)

Sofía Tejeda
as Mujer (as Sofia Tejeda)

Jorge Guzmán
as Marcos

Ana María Guzmán
as Dra. Peralta