Marked Personal is a mystery novel written by Anna Katharine Green and published in 1898. The story follows the investigation of a murder in a wealthy family's home, where a valuable diamond necklace has gone missing. The detective, Ebenezer Gryce, is called in to solve the case and uncovers a web of secrets and lies among the family members and their servants. As he delves deeper into the case, he discovers that the murder and theft may be connected...