The mysterious history of our reality Persons Belmesa

Is it just me, or is it a stain on the wall looks like looking at you people? This is one of the persons Belmesa, which were in the house of the family Pereira. For 20 years these persons resemble men and women. They appear each time with a different facial expression. The strange thing is that the person staying in the house only for a short time, and then they disappear. Conducted research on the subject of what causes this effect. During one of them from under the house was dug, the human body, but the faces continued to appear. No response was never found.