Rescued from the gallows in 1850s London, orphan (and thief) Mary Quinn found herself at Miss Scrimshaw's Academy for Girls, the cover for an all-female investigative unit called the Agency. Now seventeen, Mary must put her training to the test. Disguised as a lady's companion, she infiltrates a merchant's home in hopes of finding clues to the whereabouts of his missing cargo ships. But the household is full of deceptions, and there is no one to trust... Or is there? Packed with suspense and evoking gritty Victorian backstreets, this breezy mystery marks the debut of a detective who lives by her wits while uncovering secrets -- including those of her own past.