The "Hag of Pine Street" in Philadelphia is a nickname for a demon believed to haunt a home located between 6th and 7th Streets on Pine Street. The haunting involves manifestations such as black fog, a foul odor, unseen attackers, and even reports of blood dripping from walls. The legend states the home's evil presence is so strong that it's considered a demon, leading to its nickname. The spirit, or demon, is said to appear as a black fog or a strong, unpleasant smell. Unseen forces are believed to attack residents, and objects can be moved or destroyed. Reports also mention blood dripping from the walls of the property. The entity is sometimes referred to as an "elderly woman" in some versions of the story, though the primary legend describes it as a demon that "manifested in more ways than one," according to the source.