Petals on the wind - V. C. Andrews

The bestselling phenomenon of the Dollanganger family saga continues, as the children who escaped the attic build new lives, haunted by their tragic past.

The children now growing to adulthood had survived their imprisonment in the dark attic and had broken free to the sunlit world outside. But they found that the horror and pain of their captivity would not leave them. The memory of it would not allow them to lead ordinary lives. Was it their fault? Was there something strange about them?

Only their mother could help them. Only revenge could satisfy them