‘These drawings have a meaning, I am sure of it, Watson. They are hieroglyphics of some kind. If we could crack the code, we could solve the mystery.’

When it comes to mysterious pasts, Elsie Cubitt certainly has one. So when she starts receiving secret coded messages around the house, her husband begins to worry and turns to Holmes and Watson to help. But can the genius detective and his trusty sidekick crack the code before these dancing drawings turn deadly?