V. C. Andrews
The Garden of Shadows
This is either book 5 or book 1 of the Dollanganger series. It was written fifth, but takes place before. If you are interested in the series, but Flowers in the Attic is all checked out, then try this one.
At last, with her tall handsome husband, she would find the joy she had waited for, longed for. But in the gloomy mansion filled with hidden rooms and festering desires, a stain of jealous obsession begins to spread... an evil that will threaten her children, two lovely boys and one very special, beautiful girl. For within one innocent child, a shocking secret lives... a secret that will taint the proud Foxworth name, and haunt all their lives forever!