'I've had this secret inside me. Your secret. You've always been good at keeping secrets.'Gaby and Connor seem to have a loving marriage - one that is built on knowing every last detail about one another, or so Gaby has always believed. While their son Ethan sets off for university, Gaby and Connor will be alone again - a chance to rediscover their relationship, just the two of them. But there is one person missing from Gaby's life - Nancy, her best friend since childhood. As teenagers they shared their deepest secrets. As adults they discovered love - Gaby with Connor and Nancy with Gaby's adored brother, Stefan. The foursome became inseparable. Then one day, Nancy upped and left. Now, almost twenty years later Gaby finds herself idly watching television when a sharp stab of recognition hits her - the face she recognizes on the screen belongs to Nancy. Suddenly, the friend she thought she'd lost for good is within her reach. But does Nancy want to be found?