When Theresa is revealed to be Gwen's fraternal twin sister via a love affair by Rebecca and Julian long ago (Julian fell madly in love with Rebecca to Alistair's chagrin), the truth comes out by the Crane nurse who delivered the twins and separated the girls, giving Theresa to Pilar to raise, on orders by Alistair who despised Rebecca and plotted to keep Julian from marrying Rebecca. To further complicate matters, Alistair plots to make known Gwen and Rebecca's secrets of the tabloid and Sarah's death to further keep Julian and Rebecca apart. Will Theresa accept Gwen as her sister and can Ethan prove his love for Theresa despite who her parentage is?