Developing Goppleganger ?

Today a photograph was reluctantly brought to my attention on facebook. My relation really wondered whether he was doing the right thing showing  it to me. The thing was several other people he knew had come to the same conclusion that this photograph was just plain disturbing. The photo was of a family member and a lodger who comes from Brazil. The odd thing is that his face seems to becoming disturbingly like my Sisters in its bone structure. Again this is not my observation, but now im wondering whether this is a trick of the light or just a freak photograph. This weekend i should get the answer.