The Nose Knows
On first glance, it appeared that Juana Gillette had mistakenly mixed her medications and died of an accidental overdose in 1984. However, when her husband Ronald moved in with another woman just days after Juana's death, authorities became suspicious. After an autopsy revealed that the amount of drugs in her system wasn't fatal, police discovered a plastic bag at the murder scene with an indentation of a nose in it. Employing oblique lighting (lighting held at an angle) they uncovered an impression of a face in the plastic bag and, using this fatal portrait as evidence, Ronald Gillette was convicted of suffocating his wife to death.