Yes I believe in ghosts but not in the sense they are visible entities, or ghostly apparitions and so easily recognizable. I have had the privilege to restore inglenook fireplaces in 4-500 year old properties and as you peel back the layers of newer fireplaces that were added over the years there is definitely a kind of pent up energy that is released and picked up by a sixth sense that leave the hairs on the back of the neck standing up.
I have found gold rings, combs, children’s dolls and the bones of creatures that got trapped and it is extremely spooky when you pick them up knowing you are the first in hundreds of years to discover them and the “spirit” of that child/person or animal is then released after being entombed for so long.
Or of course it could just be a vivid imagination. Either way I do believe our “sixth” sense tells us things that is normally disguised or hidden.