"Seven years after her husband's death--six since she read his final letter--Holly Kennedy has moved on with her life. When Holly's sister asks her to tell the story of the "PS, I Love You" letters on her podcast--to revisit the messages Gerry wrote before his death to read after his passing--she does so reluctantly, not wanting to reopen old wounds. But after the episode airs, people start reaching out to Holly, and they all have one thing in common:...