Scarlett's lies come back to haunt her when Madonna's efforts to make a family tree bring to light a big brother she never knew she had. Will Scarlett reconnect or push her long-lost son away? Annie is determined not to let Frankie's blackmail dictate her life, but will she be able to tell the ones she loves that she hurt them? Angus is unable to face up to his fears when he starts presenting worrying symptoms.