Hello everyone
Yes it is a ghost! i have seen many and i can assure you that is a ghost!
Ghosts seem to appear more when you use pinhole cameras or crappy plastic ones, they also appear when you shoot the same film twice. But not always...
You have to tease the ghosts for them o appear in your photos, if you are a technically perfect photographer they seem to be very shy, but if you tease them with some not by the book techniques they will gather and smile to your photos.
Paranormal makes nice photos!