For twelve-year-old Ottilie Finch, London is an exciting playground to explore. Her family have recently arrived in Hamstead from Durham, under a cloud of scandal that Otty is blissfully unaware of. The only shadow over her days is her mother’s mysterious illness, which keeps her to her room.
When young local girl Mabs is offered the chance to become Mrs Finch’s companion, it saves her from a desperate life on the canals. Little does she know that all is not as picture-perfect as it seems. Mabs is about to become tangled in the secrets that chased the Finches from their last home, and trapped in an impossible dilemma . . .