Precursor
Sam is a nurse and single mother; she has a son, Alex (played first by Oliver Davis, later by Dominic Janes). Alex was born when she was fifteen; she has had to raise him mostly on her own. She comes from a family of losers and alcoholics; her anger towards Abby Lockhart in Season 14 when Abby tells the staff she had a relapse while working is explained when she tells Abby that she came from a long line of drunks who never tried to stop drinking.
Read more about this topic: Samantha Taggart