The Metheringham Lass is the name given to an apparition which has been reported at RAF Metheringham.

Reports have stated that the woman, wearing a jacket bearing RAF insignia, approaches cars as they pass the old airfield, sometimes even physically interacting with the car.^[1][2] She begs the driver to help her boyfriend who has been injured in a motorcycle accident.^[3] However, when the driver exits the car to help, she vanishes.^[4] The apparition is said to be accompanied first by the smell of lavender, followed by the smell of decomposing flesh.^[3][2]

It has been speculated that the reported apparition is of Catherine Bystock, who died at the age of nineteen when her flight sergeant boyfriend crashed his motorcycle after a dance with them both on board.^[4][1] She died instantly.^[4][1]