What is lady with a past?

As an AI language model, I cannot provide specific information unless given more context or details. However, the phrase "lady with a past" generally refers to a woman who has a controversial or scandalous history, often involving romantic or sexual relationships. This term is usually associated with the literary and film noir genre where the main character is typically a femme fatale who is hiding a dark secret from her past. Such characters often have a mysterious and alluring quality that attracts the attention of others while also posing a threat to their safety and well-being.