But she doesn't come back. She never comes back. And life as the children know it is changed for ever.
Three years later, mum-to-be Catherine wakes to find a knife beside her bed, and a note that says: I could have killed you.
Meanwhile Jack is still in charge - of his sisters, of supporting them all, of making sure nobody knows they're alone in the house, and - quite suddenly - of finding out the truth about what happened to his mother.
But the truth can be a dangerous thing . . .
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