'If you ever tell my secret, you'll be dead to me.' THE FRIEND: When ordinary mum Frankie moves into her new seaside home, it is a dream come true. Her new neighbours - glamorous Zara, ambitious Nadine and social butterfly Geneva - soon take her under their wing. The four women become inseparable. Until the morning when Geneva's body is found on the beach. THE HUSBAND: Suspicion is immediately cast on Geneva's husband. Everyone believes he must be...