78: Dorothy Arnold | young socialite disappears into thin air

In 1910, 25 year old Dorothy Arnold went out to shop for a dress for her sister's debutante ball. And then she disappeared into thin air. 112 years on, and there has never been so much as a single clue as to what happened to Dorothy. Did she run away to start a new life? Did she die in a botched abortion? Was she abducted off the street? Maybe one day we'll find an answer.