If you are ever asked to help investigate a haunting or looking for a ghost, do yourself and your investgation a favor and do it with the lights on or during the day time. Human eyes are not designed to see well in the dark and you could easily mistake a shadow for a spirit. Ghosts and spirits don’t care if the lights are on or off. If they are there – they are there.
Most genuine sightings are documented to have happened during the daylight hours in a well lit room or garden.