In 1854, a woman calling herself Henrietta Robinson stood trial in Troy, New York, for poisoning a neighbor and his sister-in-law. Despite the judge’s admonitions, she sat through the trial with her face covered by a black veil, hiding her appearance from the throngs of spectators who had come to watch. Everything about the defendant was a mystery—her motive for murder, her behavior before and after the crime, and even her true identity. It was well known that “Henrietta Robinson” was an assumed name, but who she really was has never been determined.