The last time Megan saw her youngest daughter, Emma, was on the little girl's third birthday. Now, two years later, she sees her daughter's face in every blonde girl she passes--at the grocery store, in car windows, at the doctor's office. She is determined to find her daughter, but her commitment borders on obsession as she finds herself following these little girls who resemble her missing daughter.

Her inability to move on after Emma's kidnapping has distanced Megan from her friends and family. Her two older daughters resent her relentless and fruitless search for their sister, and...