Lincoln Cathedral, some believe it's a powerful torch light and others are convinced it's a hoax.
Some think it's a ghostly apparition stalking
But one thing is for certain, Paul Jackson's video clip taken in the city's landmark building has led to a lot of head scratching.
Seen 13,000 times on Youtube the video shows an orb of light passing
quickly along the width of the Willis Organ at the cathedral.
Shocked Paul discovered the haunting sight when reviewing footage he and his son took in February.