Present day Paris: Maggie Parker receives a call. The new owners of her family's old Notting Hill home are digging up the basement. They've no idea what might lie beneath . . .

London, twenty-one years earlier: teenaged Maggie, babysitting her little brother, waits in vain for her mother to come home after a night out. Seeking clues to her mother's mysterious disappearance, she's drawn away from the neighbourhood's grand terraces and into its hustling backstreets - and the arms of someone else living on their wits.