As the Bannermans mark the anniversary of the premature death of their little girl Catherine, Maggie Rigby, a former school-friend of surviving daughter Adele comes to the Grand, supposedly to convalesce after an operation, though she confides in Adele that she has just had an abortion. She is selfish, mischievous and clearly troubled, annoying guests and staff alike. She gets Kate drunk, causing Esme and Monica to cover for her. She explains to Adele that her bad conduct is due to her feeling worthless after being exploited by a man. Adele in turn feels that she is second best to her dead sister and argues with her father, although they are ultimately reconciled. With the truth out Maggie is collected from the Grand by her widowed father. Their conversation makes it clear that they have had an incestuous relationship and that he was responsible for the aborted child but Adele is too naive to understand this and envies Maggie as she leaves.
—don @ minifie-1