Forensic geophysics is a scientific technique that uses non-invasive surveys to locate hidden underground or underwater objects and features. It has been used to locate victims' remains and bring murderers like Myra Hindley, Fred West, and Andrew Pountley to justice by rapidly surveying large areas where clandestine burials were suspected. While ground penetrating radar helped expose Fred West's crimes, geophysics has only been sporadically and variably successful in forensic investigations, though it could also locate buried weapons, money, or signs of human activity when a target contrasts with its background materials.