opening of "Historical Mysteries" begins by presenting a mysterious case from 1753 involving Elizabeth Canning, a young woman who inexplicably vanished and later reappeared in a sorry state, leading to public fascination and a divided opinion on her credibility. Andrew Lang details the circumstances of her disappearance and the societal implications surrounding her tale. He recounts various narratives from those involved in the investigation, noting the contradictory evidence and the trial that followed, where Canning was accused of perjury due to inconsistencies in her accounts. This complex case serves as a window into the nature of truth, perception, and justice in 18th-century England, setting the stage for the exploration of other historical mysteries within the collection. (This is an automatically generated summary.)