From the outside looking in, Cassie Martin's life is storybook perfect. She and her investment banker husband, Rick, have everything -- financial stability, a loving marriage, and a to-die-for apartment overlooking the Manhattan skyline that they share with their two young sons and one stinky but beloved dog. It may not be the height of excitement, but Cassie's content to take care of her family and compete in the superparenting sweepstakes of the New York City private school mom. Then one night, in one instant, everything changes. Rick has been...