Cleo Harx is the adopted daughter and sister of Finn, Tracy, and Cohen Harx. Unknown to her, she is the biological daughter of the most famous detective that had walked the face of the planet, Sherlock Holmes. But as said before, she doesn't know it yet. Cleo feels alone in the world. Most everyone she knows despises and envies her for her mind. The few that don't hate her, can't help her. Cleo's story is introduced to us when death visits the love of her brother's life. It is her job to figure it out. This is the story of Cleo Harx, or Cleo Holmes.