Circumstances of Disappearance:
Unknown. Her picture at right is shown age-progressed to 56 years. Billig was last seen hitchhiking along Main Highway in Coconut Grove, Florida on March 5, 1974. She was headed to her father's office. Billig never arrived; she has not been seen since.
Law enforcement agencies have never closed Billig's case.
She often hitchhiked in her neighborhood. She was known as a flower child, and a very spiritual, very social, well-adjusted teenager.
Her mother Susan Billig died on June 7, 2005 at the age of 80 after searching ceaselessly for her daughter for 31 years. Amy's whereabouts remain unknown and her case remains unsolved.