Plot Analysis Summary
An estranged twin murders her sister and assumes her identity, only to become trapped by suspicion, blackmail, and a murder conviction.
Story Structure — 4 Plot Phases
An Estrangement Rekindled
The twins meet at Frank's funeral after eighteen years apart. Edith's failing lounge and financial troubles sharpen her resentment toward Margaret.
Key Events
-
The Twins' Old Estrangement — The identical twins have been estranged for eighteen years after Edith stole Margaret's fiancé. Characters: Margaret DeLorca / Edith Phillips
Location: Not specified
-
Frank's Funeral — The estranged sisters meet at the funeral of the man both mourn. Characters: Margaret DeLorca / Edith Phillips
Location: Funeral
-
Edith's Failing Lounge — Edith's business is losing money, and she faces eviction over unpaid bills. Characters: Margaret DeLorca / Edith Phillips
Location: Edith's cocktail lounge
-
A Call to Settle the Score — Edith summons Margaret to her room, saying they should settle their score. Characters: Margaret DeLorca / Edith Phillips
Location: Edith's room above the bar
Murder and Impersonation
Edith summons Margaret, kills her, and stages the scene as her own suicide. She then takes Margaret's place in the DeLorca mansion, where signs of the deception emerge.
Key Events
-
A Call to Settle the Score — Edith summons Margaret to her room, saying they should settle their score. Characters: Margaret DeLorca / Edith Phillips
Location: Edith's room above the bar
-
Edith Shoots Margaret — After Margaret arrives, Edith shoots her. Characters: Margaret DeLorca / Edith Phillips
Location: Edith's room above the bar
-
The Identity Switch — Edith swaps clothes with the corpse and stages the death as her own suicide. Characters: Margaret DeLorca / Edith Phillips
Location: Edith's room above the bar
-
Edith Enters the Mansion — Disguised as Margaret, Edith takes over the DeLorca mansion. Characters: Margaret DeLorca / Edith Phillips
Location: DeLorca mansion
-
The Great Dane's Welcome — The dog, which hated Margaret, befriends Edith while she is impersonating her. Characters: Margaret DeLorca / Edith Phillips
Location: DeLorca mansion
-
The Smoking Discrepancy — Edith's smoking contrasts with Margaret's strong opposition to smoking and raises suspicion. Characters: Margaret DeLorca / Edith Phillips
Location: DeLorca mansion
Blackmail and Exposure
Tony recognizes Edith and blackmails her for jewelry. Edith learns of his and Margaret's poisoning plot, and their quarrel ends with the Great Dane killing Tony.
Key Events
-
Tony Sees Through Edith — Margaret's lover Tony arrives and quickly recognizes that the woman posing as Margaret is Edith. Characters: Margaret DeLorca / Edith Phillips, Tony Collins
Location: DeLorca mansion
-
Jewelry for Silence — Tony blackmails Edith over the killing and receives expensive jewelry. Characters: Margaret DeLorca / Edith Phillips, Tony Collins
Location: DeLorca mansion
-
The Poisoning Secret — Edith discovers that Margaret and Tony had conspired to poison Frank. Characters: Margaret DeLorca / Edith Phillips, Tony Collins
Location: DeLorca mansion
-
The Quarrel Turns Fatal — During a quarrel, Tony threatens Edith and the Great Dane attacks and kills him. Characters: Margaret DeLorca / Edith Phillips, Tony Collins
Location: DeLorca mansion
The Identity Becomes a Sentence
The investigation into Frank's death uncovers arsenic, but Edith's confession is rejected. Convicted as Margaret, she maintains the disguise even when asked directly whether she is Edith.
Key Events
-
The Case Is Reopened — Suspicion surrounding Frank's death leads to a police investigation. Characters: Margaret DeLorca / Edith Phillips
Location: Not specified
-
Frank's Body Is Exhumed — Investigators exhume Frank's body as part of the inquiry into his death. Characters: Margaret DeLorca / Edith Phillips
Location: Frank's grave
-
Arsenic Is Found — The investigation finds traces of arsenic in Frank's body. Characters: Margaret DeLorca / Edith Phillips
Location: Not specified
-
Edith Confesses — When the detective arrives to arrest the woman believed to be Margaret, Edith reveals her identity, but he does not believe her. Characters: Margaret DeLorca / Edith Phillips
Location: DeLorca mansion
-
The Murder Trial — Still posing as Margaret, Edith is tried and convicted of murder. Characters: Margaret DeLorca / Edith Phillips
Location: Courtroom
-
A Final Question — As she is taken away, the detective asks if she is really Edith; she denies it. Characters: Margaret DeLorca / Edith Phillips
Location: Outside the courthouse
-
The Gas Chamber — Edith departs for her appointment with the gas chamber without abandoning her assumed identity. Characters: Margaret DeLorca / Edith Phillips
Location: On the way to the gas chamber