Espérame en el cielo

Did Franco have a double? The story is set in the late 40's, in Spain... The humble owner of an orthopedics shop in Madrid is abducted by a misterious group... He disappears for the external world... What happened to him? Due to an uncanny similarity with the dictator, Franco, he has been "selected" for the highly secret "Operation Janus", to provide a double for Franco for dangerous moments.