In Regency London, eleven-year-old Sarah Cavendish has a talent for finding mysteries where others see ordinary life. When a cheerful flower girl named Millie sells Sarah a single rose in Hyde Park, it seems like a simple encounter. But when a series of strange coal thefts leaves behind the same mysterious flower, Sarah and her streetwise friend Tom Finch are drawn into an investigation unlike any they have faced before. With clues leading through London's parks, alleyways, and hidden corners, Sarah must discover who is stealing the coal, how they are getting past locked doors, and why a rose is always left behind. Joined by her loyal governess Margaret Ellison, Sarah soon learns that some mysteries are not as simple as they first appear, and that understanding people can be just as important as uncovering clues. Filled with friendship, humor, adventure, and heart, The Mystery of the Rose is the third book in The Adventures of Sarah Cavendish series, bringing Regency London vividly to life for young readers who love mystery and adventure. Recommended for ages 6-12.