For Isabel and Sam Lambert it was love at first sight. And since that night, they've created a good life together. But when a stranger named Mark Taylor knocks on their door claiming to be Sam's son, Isabel is shocked to realize that her life might all be lies.Isabel wants answers from Sam, but he's retreated, leaving her to sort through all they've shared and decide what kind of future they have. Reconciling the past is one thing; moving on in the present is another. Can she trust him--and her love--enough to rebuild their relationship?