"The Sword of Damocles" is a detective novel written by Anna Katharine Green, an American author often referred to as the mother of the detective novel. Published in 1881, it is one of her early works and is considered an important contribution to the mystery genre. The novel revolves around the murder of a wealthy businessman named Silas Kirtland, who is found dead in his home. The primary suspect is his nephew, Richard, who stands to inherit a significant portion of Kirtland's estate. However, as the investigation unfolds, other family members and acquaintances come under suspicion, and a web of secrets and motives is revealed. The title "The Sword of Damocles" alludes to a metaphor from Greek mythology, where Damocles, a courtier of the tyrant Dionysius II of Syracuse, experiences the constant fear of impending danger or disaster. In the context of the novel, it suggests the looming threat of justice or retribution hanging over the guilty party. Anna Katharine Green was known for her intricate plots, well-drawn characters, and skillful use of suspense and atmosphere. "The Sword of Damocles" is an early example of her work and showcases her talent for crafting compelling mysteries that keep readers guessing until the very end.