When Mary Godwin and Lady Ada Byron first meet, they donâe(tm)t exactly hit it off. But with crime on the rise, the unlikely pair form a detective agency to hunt down clever criminals on the streets of London. Their first case involves a stolen necklace, a false confession, and lots of suspicious suspects âe" but these are no match for Ada and Mary. Filled with daring balloon chases, vile villains and two unforgettable heroines, The Case of the Missing Moonstone is the first in a thrilling new series; perfect for all aspiring sleuths.