Swap

"During IVF treatment, Tess and Annie have their embryos mistakenly swapped. For three years, they have been unknowingly raising each other's children. When Tess meets Willow, the daughter she so desperately craved, she becomes determined to reclaim the child as her own, regardless of the emotional cost. But Annie refuses to contemplate letting go of the little girl. As they wrangle, an unanswerable question is posed. Whose child is whose?"--Publisher description