This is the thrilling debut in Nancy Springer's Enola Holmes Mystery series. When Enola, the much younger sister of Sherlock and Mycroft Holmes, discovers her eccentric mother has vanished, she refuses to conform to her brothers' plans for a finishing school. Instead, armed with cryptic clues left by her mother, Enola embarks on a secret life in Victorian London. She soon finds herself embroiled in the perplexing disappearance of the young Marquess of Basilwether, using her sharp intellect, ingenious disguises, and an independent spirit to unravel the mystery and carve her own path.