Tainted - Brooke Morgan

When Holly Barrett meets Jack Dane, she falls rapidly in love for the first time.
Within six weeks they are married and for Holly and her young daughter Katy, Jack has given them an escape from their small-town Massachusetts existence.
Parts of Jack's life seem to remain shrouded in mystery.
But Holly, happier than she's ever been, sees only interference and jealousy when her grandfather, Henry, and best friend Anna, raise questions about Jack's past.
However, the truth starts to emerge, and frighteningly, it seems possible that everything Holly has ever believed in could be a terrible lie...and that rather than marrying the man who would save them from their small but safe existence, Holly may have brought a monster into all their lives...