If There Be Thorns: Virginia Andrews

They thought they had left the attic far behind,
But the darkness stalks them, ready to claim the next generation…
Chris and Cathy have moved out of the shadow of the attic that brought them so much torment, living a new, happy life with their children and their love. Yet the past is not done with them yet. A mysterious journal reveals hidden secrets and opens old wounds, until the anger and hatred that defined their childhood once again dominates their lives.
Only forgiveness can truly set them free - but some acts are beyond redemption.
Haunting and evocative, If There Be Thorns is the third book in the best-selling Dollanganger saga, still as gripping and terrifying today as it was when it first appeared.