She built something good from the worst thing she ever did. For twenty years, Tess Callahan has run a foundation for missing children. The reason she started it is something she’s never told anyone. When she returns home to be with her dying sister, Rachel, the truth she has carried alone for two decades sits heavier than ever. Because Rachel is running out of time. And some confessions, once made, cannot be unsaid. What would you do with a secret that has shaped your entire life, if the only person it would hurt is already leaving?