While on the run from her brother Sherlock, the world's most famous detective, Enola Holmes has been hiding in plain sight, lodging with Mrs Tupper. Mrs Tupper may be half-deaf and a terrible cook, but she is the closest thing Enola has to a family.

So when she discovers that her dear land lady has been abducted, Enola is shocked but determined to find out why. Especially when she finds cryptic codes within a crinoline underskirt in Mrs Tupper's upturned room. . . But who could have taken Mrs Tupper? And why do all the clues lead to Florence Nightingale?It's another gripping case for our young heroine in this enthralling fifth mystery.