Tess has a secret - one which is going to turn her life upside-down in just nine months' time. The only person she can confide in is her beloved grandmother. But Iris is slipping further away each day. Then chance brings a stranger into Tess's life. Gigi's heart goes out to Tess and she's determined to show her that there's a silver lining to every cloud. As their unlikely friendship blossoms, Tess feels inspired to open up. But something still holds her back - until she discovers Iris has a secret of her own. A suitcase of letters from another time, the missing pieces of a life she never shared. Could the letters hold the answers that Tess thought lost forever?