For anyone who's dreamed of immortality comes a twice-in-a-lifetime love story by Marc Levy, the phenomenal, internationally bestselling French author of P.S. from Paris and The Last of the Stanfields. In Massachusetts, neuroscience students Luke, Josh, and Hope have formed an unbreakable and unconditional friendship. Bound by their wit, brilliance, and curiosity, they throw themselves heart and soul into their research...