Poppy Maysen carries a journal in her purse. Its pages were filled long ago by a man who craved adventure, lived life to the fullest, and never failed to make her laugh. The journal is his birthday list - one she vows to complete. She'll do the things he wanted to do most. Because maybe, just maybe, if she can finish his list, she can start to live again.

Molly Alcott didn't expect to open her mailbox one summer morning and find an old letter stuffed between bills and a supermarket flyer. Penned in familiar handwriting, dated over 15 years ago, the letter was written to Molly after her first date with the man she'll never forget. Week after week, new letters appear. Each marks an event in the history of their epic love affair. Each heals a wound. Each holds the confession of the man who still owns Molly's heart. Molly wishes she could unread them all. Because the man who wrote these letters is not the one sending them.