The PS, I Love You Club.

These are the six words written on a card handed to Holly Kennedy. They're words that are engraved on her heart - because PS, I Love You is how her husband, Gerry, signed his last letters to her, letters that mark a year she will never forget.

Now, the mysterious club wants something from her. And if Holly can find the courage meet them, she'll learn what it really means to live life to the full.

Because every love story has one last thing to say...