The Enola Holmes Mysteries is a book series written by Nancy Springer. The series follows the adventures of Enola Holmes, the younger sister of Sherlock Holmes. Enola is a clever and independent young woman who becomes a detective in her own right. Throughout the series, Enola solves various mysteries and navigates the challenges of Victorian society. The books are known for their engaging storytelling, well-researched historical setting, and empowering portrayal of a young female protagonist. Millie Bobby Brown's portrayal of Enola in the film adaptation has brought renewed interest to the book series.