It's a peaceful Sunday evening in suburban Glasgow. But this peace is shattered when a battered van pulls up to the door of one of the homes and disgorges two armed men in balaclavas. They smash into the house, hold the family at gunpoint and demand millions. The hostages protest that they don't have that sort of money. In response the attackers kidnap the elderly grandfather and storm off into the night. Now senior policewoman Alex Morrow has been summoned to investigate the case. Who were the men? And why did they think a normal household concealed untold riches? The family is certainly not talking. But as DS Morrow starts to delve deeper, she realises there are dark secrets all around...