Gaby and Nancy were inseperable when they were young. As teenagers they had no secrets and as adults they could conceive of none. Even when they found love - Gaby with Connor, and Nancy with Gaby's brother, Stefan - it was clear that nothing could separate them. Then one heartbreaking day Nancy left Stefan and walked out of all their lives. No one saw or heard from her again. No one knew where she went or why. Two decades later, Gaby - now a dutiful mother - discovers where Nancy lives. And she does something rash and impulsive: she turns up on her former friend's doorstep, unannounced and distraught. Yet when Nancy faces some searching questions with chilly indifference, Gaby makes a fateful decision to delve into her friend's new life - revealing some shocking, painful secrets with consequences for them all.