My take
Thank god I'm not part of this family.  I enjoyed the story, but found the character development to be lacking and the ending just basically sucked.

From the Publisher

It couldn't happen to a family like the Greys. Surely, Dan and Sally's troubled five-year-old daughter could not have been molested as the doctor claimed. She was too well guarded for anything like that to happen. But she was destroying their home and their lives. Meanwhile, the family business was tottering, threatened by dissent from within. The pressure was on to sell family land to foreign investors, a move that divided the Greys and threatened Grey's Foods and the small upstate New York city it fed. Oliver Grey, the handsome silver-haired patriarch, bowed out, leaving the business to his sons, Ian and Clive, and Dan, the orphaned nephew he reared as his own. Ian was ready to sell to the highest bidder to buy off his mistress and save the marriage he couldn't afford to lose. Clive, the brilliant misfit, gave his life to the business until he, too, met a woman. Amanda, Dan's estranged sister, had the knowledge, the power, and the motive to destroy them all: an unspeakable secret that would link her to a little girl and a silver carousel.