Spotting a ghostly girl in the park who resembles the Wollstonecraft Detective Agency's new client, Lady Ada and Mary discover links between the girl and a case involving a hospital, a missing will, a hasty engagement, and a devious servant.

"Even by 1800s standards, Ada Byron Lovelace had an unusual upbringing. Her narcissistic mother worked hard at cultivating her own role as martyred ex-wife of bad-boy poet Lord Byron and had Ada tutored at home by some of the brightest minds. Ada developed a hunger for mental puzzles, mathematical conundrums, and scientific discovery that kept pace with the breathtaking advances of the industrial and social revolutions taking place in Europe. At seventeen,...

"Ada Lovelace turned her powerful imagination into a vision of the future, predicting the impact of computers on human life. Her work spread awareness of what an early computer could do"--

Ada's grandmother has shut down the Wollstonecraft Detective Agency until a request from princess Alexandrina Victoria, the future Queen, places them on the trail of her missing sketchbook, in which she records her private thoughts.

"Have you ever wondered who developed computer coding? Discover how Ada Lovelace's interest in mathematics led to her work on an early computer and the first programming algorithm ever used"--Provided by publisher.