Author: Stratford, Jordan
Crime & mystery fiction (Children's / Teenage) 
Published 04/02/2016 by Penguin Random House Children's UK (Yearling (imprint of Random House Children's Books) in the United States as part of the Wollstonecraft series 
Paperback | 240 pages
When Mary Godwin and Lady Ada Byron first meet, they don’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 – but these are no match for Ada and Mary.
Filled with daring balloon chases, vile villains and two unforgettable heroines, TheCase of the Missing Moonstone is the first in a thrilling new series; perfect for all aspiring sleuths.