Dawn Edelstein knows everything there is to know about dying. As a death doula, she specialises in helping her clients make peace with the end of their lives. But as she's flying home from her latest case, her plane plummets from the sky, and she is forced to confront her own mortality for the first time.
Instead of seeing her brilliant quantum physicist husband Brian and their beautiful daughter flash before her eyes in what she assumes are her last moments, only one face comes to mind: Wyatt Neville.
Miraculously surviving the crash, Dawn is compensated with a plane ticket to any place of her choosing. Suddenly, she sees two options before her: return to Boston, her family, and the life she knows, or journey back to an Egyptian archaeological site she left over a decade earlier, reconnect with Wyatt and their unresolved history, and finally finish her magnum opus on The Book of Two Ways - the first known map of the afterlife - that she was forced to abandon.
As the story unfolds, Dawn's two possible fates are unspooled side by side, as are the secrets and doubts long buried alongside them.
While attempting to reconcile with the path she chooses for her life, Dawn must confront the questions she's never truly answered: What does a life well-lived look like? When we depart this earth, what do we leave behind of ourselves? And who would you be, if you hadn't turned out to be the person you are right now?