Maryland's Unknown Child was a teen or young adult who was found on July 31, 1991 under an overpass in Frederick County, Maryland.
The victim was found in an advanced stage of decomposition and her exact cause of death was not possible to determine. The case is, however, listed as a homicide by the FBI.
- Some believe she may have been a victim of a killer who had girl's underwear and shoes in his possession; articles of clothing that the girl did not wear when she was found.
- She may be Michaela Garecht.