Sarah's suspicions are aroused when she realizes that the death of the local teacher, Milly Davis, may not have been a suicide as first suspected. James and Olivia's sham marriage falls further into disarray when she learns that although they aren't George's biological parents, the courts will still favor the Bligh family in a custody battle. Elizabeth offers James and Henry her blessing to pursue a relationship together. Regina begins to drive a wedge between Anna and Gino when she sends Rose for Italian lessons. When Sarah knows the truth behind Milly's death, she confronts Regina.
A Place to Call Home: A Nagging Doubt, Thursday at 9 p.m. on PBS 6.