Tracked by a Tattoo is a mystery novel by Fergus Hume that tells the story of a young woman named Celia Harland who inherits a fortune from her late father. Soon after, she becomes the target of a series of mysterious events, including a threatening message written in tattoo ink. With the help of a private detective, Celia sets out to uncover the truth behind her father's death and the meaning behind the tattoo. But as she delves deeper, she discovers that her own life is in grave danger. Full of twists and turns, "Tracked by a Tattoo" is a thrilling tale of intrigue and suspense.