Helen Marie Alderson Hall, 60, was found dead in her St. Petersburg, Florida home on May 20, 1978. Her son, Richard, discovered her body in her bedroom. Authorities determined she had been bludgeoned to death with an unidentified object. There were no signs of forced entry, and Helen’s 1971 light-green Lincoln Continental was missing and presumed stolen.

Initially investigators could not identify suspects or a clear motive. In the early 1980s convicted killer Anthony LaRette confessed to Hall’s murder and gave details that matched the crime scene; authorities later attributed the killing to him. Helen was buried in Memorial Park Cemetery in St. Petersburg.

If anyone knew Helen, her routines, or has information about the missing Lincoln Continental, please share what is known.