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....

For the four Alton children, it's the perfect summer escape where not much ever happens - until one stormy evening their idyllic world is shattered.Decades later, Lorna is drawn to a crumbling Cornish manor house she hazily remembers from childhood - feels a bond she does not understand.But a disturbing message left by one of the Alton children tells her that Black Rabbit Hall's history is as dark and tangled as its woods.And much like her own past, it must be brought into the light . . .

When four sisters arrive at Applecote Manor to spend the summer, all is clearly not well.They find their aunt and uncle still reeling from the disappearance of their only daughter, five years before. No one seems any closer to finding out the truth.Why did Audrey vanish? Who is keeping her fate secret?As the sisters are lured into the mystery of their missing cousin, the stifling summer takes a shocking, deadly turn.