It's official: billionaire Jackson Colt has fallen in love. After spending his life avoiding that four letter word, pretending he didn't want to be seen, he realizes that love is worth the risk. But does Sadie feel the same? In her darkest hour, face to face with her demons, Sadie McLeod should be doing the thing she does best—pushing away everyone. Her heart is on the line. Will she lose everything if she lets herself fall, or will Jackson catch her? Irreplaceable is the final installment in the Underneath It All series.