Debbie Does Drivel

I am so not kidding, I just saw ghostly stuff. Proof, I tell you!
A co-worker went to New Orleans, Seattle, and back to San Diego over the holidays, and while in both New Orleans and San Diego, she visited some notoriously haunted places. She and her sister took pictures in all three cities, so the haunted places pics were broken up by holiday pictures, New Year's snapshots, etc...and the thing is, ONLY the haunted places pictures have these weird lighty tracer things all over them. Her camera took every other picture fine, and the film developer inspected the film and found it to be OK...
soooo, what was the deal?
The roll went like this: San Diego b-day, Seattle Christmas at home, New Orleans haunted place, San Diego New Year's, San Diego haunted place. Only the haunted places pics turned out weird! Don't you find that funny? You REALLY have to see it.
In one (San Diego Whaley House), co-worker's sister took a pic of a wall supposedly bewitched. The wall was blank and empty. Then, she had her sister take a pic of her in front of the wall....
Well, when the pics were developed, the empty wall pic came back empty-wall looking...but the one with the girl in front of it had these weird light worms of all different colors squiggling around her.
Then, an exterior shot of the house in New Orleans (woman serial killer's residence), shows these different-looking thick light ribbons weaving through the pictures.
I'm so strangely excited, and newly scared of the dark all at the same time.