Plot Analysis Summary
A suspicious engagement becomes an investigation into staged deaths, false supernatural evidence, and concealed revenge.
Story Structure — 4 Plot Phases
A Dangerous Engagement
An unemployed engineer accepts a paid sham engagement to Elinor Bentley. Lil Barstow tries to warn him that Elinor's former fiancés met horrifying fates.
Key Events
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The Employment Advertisement — A lawyer notices an advertisement from an unemployed engineer seeking any legal work.
Location: Newspaper office
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The Strange Engagement Offer — The engineer is offered money to feign an engagement to Elinor Bentley for one month. Characters: Elinor Bentley
Location: Lawyer's office
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Three Tragic Fiancés — Elinor's three former fiancés suffer drowning, paralysis, and a fatal snakebite. Characters: Elinor Bentley, Paul Myron
Location: Narrative background
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Lil Tracks the Case — Lil Barstow investigates the former fiancés and communicates with Paul Myron. Characters: Lil Barstow, Paul Myron
Location: Newspaper office
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Warning at the Station — Lil tries to warn the arriving engineer, but Elinor smashes her camera and takes the travelers away. Characters: Lil Barstow, Elinor Bentley, Clarence
Location: Train station
Shadows at the Mansion
The engagement party enters the strange Bentley mansion, where Ames's collection and the family's tensions create an atmosphere of menace. A hidden attacker strikes Tennant through a secret panel.
Key Events
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Arrival at Bentley Mansion — Elinor brings the engineer and Clarence into the unsettling Bentley household. Characters: Elinor Bentley, Clarence, Ames Bentley, Tennant Bentley, Hilton Fairchild
Location: Bentley mansion
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Ames Displays Shrunken Heads — Ames Bentley displays his collection and mentions wanting another specimen. Characters: Ames Bentley
Location: Bentley mansion
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Tennant Claims the Room — Tennant objects to the engineer using his former room, prompting a room switch. Characters: Tennant Bentley, Clarence
Location: Bentley mansion
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Attack Through the Secret Panel — The presumed ghost emerges through a secret panel and attacks Tennant by mistake. Characters: Tennant Bentley, Elinor Bentley, Clarence
Location: Bentley mansion
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The Ghost Warning — Lil explains the former fiancés' fates and warns that the attacks cannot be accidents. Characters: Lil Barstow, Clarence
Location: Outside Bentley mansion
The Ghost's False Trail
After hearing Lil's warning, the engineer investigates Paul Myron's account of the ghost. The empty crypt and the attack inside it make the supernatural explanation appear increasingly credible.
Key Events
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Elinor Confesses Love — Elinor confesses that she has fallen in love, causing the engineer to remain. Characters: Elinor Bentley, Clarence
Location: Bentley mansion
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Visit to the Iron Lung — Lil and the engineer visit Paul, who recounts seeing the ghost after his car wreck. Characters: Lil Barstow, Paul Myron
Location: Paul Myron's room
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The Eggleston Theory — Paul claims the ghost resembled John Eggleston, while the engineer suspects a staged death and revenge. Characters: Lil Barstow, Paul Myron, Elinor Bentley
Location: Paul Myron's room
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The Empty Crypt — Lil and the engineer visit Eggleston's crypt and discover that it is empty. Characters: Lil Barstow, Paul Myron
Location: Cemetery crypt
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Buried Alive — The ghost attacks the engineer and entombs him inside the crypt. Characters: Lil Barstow, Paul Myron
Location: Cemetery crypt
The Killer's Last Move
Rescued from the crypt, the investigator chooses to stay and stages a false marriage to lure out the murderer. The plan exposes Paul Myron as the Smiling Ghost.
Key Events
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Lil's Crypt Rescue — Lil rescues the trapped engineer, strengthening their determination to solve the case. Characters: Lil Barstow, Paul Myron
Location: Cemetery crypt
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The Marriage Trap — The engineer proposes a false marriage to lure the killer into revealing himself. Characters: Elinor Bentley, Lil Barstow, Paul Myron
Location: Bentley mansion
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The Killer Is Unmasked — The denouement reveals Paul Myron as the Smiling Ghost killer. Characters: Paul Myron, Elinor Bentley, Lil Barstow, Tennant Bentley
Location: Bentley mansion
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The False Ghost Explained — Paul's ghost testimony is exposed as part of the deception behind the attacks. Characters: Paul Myron, Lil Barstow, Elinor Bentley
Location: Bentley mansion
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Unexpected Espousal — After the killer is exposed, an unexpected marriage follows the mystery's resolution. Characters: Elinor Bentley, Lil Barstow, Clarence, Tennant Bentley, Ames Bentley, Hilton Fairchild
Location: Bentley mansion