After Isabelle accidentally kills April in a highway collision, Isabella must pick up the pieces of her own life and, with the help of April's husband and son, figure out where April was running to.
Two women running away from their marriages collide on a foggy highway, killing one of them. The survivor, Isabelle, is left to pick up the pieces, not only of her own life, but of the lives of the devastated husband and fragile son that the other woman, April, has left behind. Together, they try to solve the mystery of where April was running to, and why. As these three lives intersect, the book asks, How well do we really know those we love—and how do we forgive the unforgivable?