Plot Analysis Summary
A newlywed couple investigates supernatural disturbances aboard a yacht whose abandoned voyage conceals murder, betrayal, and a hidden identity.
Story Structure — 5 Plot Phases
A Yacht With a Past
The prospective owners hear the Cyclops's mysterious history, including its abandonment, missing lifebuoy, and unexplained deaths. Despite warnings and haunting rumors, they purchase the yacht.
Key Events
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Cyclops Purchase Proposal — A newlywed couple meets a broker to purchase the steam yacht as their future home.
Location: Shipyard
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The Yacht's Dark History — The Yard Manager recounts the yacht's mysterious disappearance after the war.
Location: Shipyard Office
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Martineau's Voyage — Professor Martineau, his wife, and engineer Peter sail toward Deauville but never arrive. Characters: Peter
Location: Cyclops
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Abandoned Yacht Found — Fishermen find the Cyclops abandoned after three days, with its equipment still functioning.
Location: At Sea
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Missing Lifebuoy Mystery — A body is found ashore, while one lifebuoy is missing from the yacht.
Location: Coastal Shore
Smoke Below Deck
The renovation and housewarming are disturbed by cigar smoke and rumors of a ghost. Engineers leave the yacht after increasingly troubling incidents.
Key Events
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Inquiry's False Conclusion — The inquiry concludes that two people drowned while trying to save the third.
Location: Inquiry Room
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Haunting Rumors Spread — The Yard Manager says the yacht changes owners frequently and hints that it may be haunted.
Location: Shipyard
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The Overhaul Begins — The new owners purchase the yacht and begin renovating it as a home.
Location: Cyclops
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Mansel Joins the Crew — Unable to find a local deckhand, the owners hire Mansel, who dismisses the haunting rumors.
Location: Cyclops
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Cigar Smoke at the Party — During a housewarming party, a guest reports smelling cigar smoke aboard the yacht.
Location: Cyclops Saloon
The Invisible Intruder
A breathing telephone call and a vanishing cigar-smoking figure intensify the fear aboard the Cyclops. The owners seek professional paranormal help.
Key Events
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First Engineer Quits — The engineer leaves, claiming his wife is ill, while the Yard Manager suggests a ghost caused his departure.
Location: Cyclops
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Second Engineer Resigns — A replacement engineer quits after claiming to have seen a ghost.
Location: Engine Room
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The Empty Bridge Call — A phone call delivers only breathing, but the bridge is empty when investigated.
Location: Bridge
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Ghost in the Engine Room — A man smoking a cigar appears to Guy in the engine room and vanishes when challenged.
Location: Engine Room
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Psychic Investigator Hired — Dr. Fawcett is hired after the couple considers selling the yacht because of the disturbances. Characters: Dr. Fawcett
Location: Cyclops
Voices From the Séance
Dr. Fawcett confirms a psychic presence and works with Mrs. Manley. Their séance reveals Peter's affair, the murder conspiracy, and the hidden bodies.
Key Events
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Psychic Presence Confirmed — Dr. Fawcett senses a powerful psychic presence and also detects cigar smoke. Characters: Dr. Fawcett
Location: Cyclops
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Séance Begins — Dr. Fawcett invites Mrs. Manley to conduct a séance aboard the yacht. Characters: Dr. Fawcett, Mrs. Manley
Location: Cyclops Saloon
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Murder Conspiracy Revealed — The séance reveals an affair and a plan involving Peter to murder Professor Martineau. Characters: Dr. Fawcett, Mrs. Manley, Peter
Location: Cyclops Saloon
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Martineau's Counterattack — Martineau overhears the plan, breaks the bridge phone, and shoots Peter and his accomplice. Characters: Peter
Location: Cyclops
The Ghost Identified
The water tank confirms the séance's revelations, while Mansel's suicide exposes his identity as Professor Martineau. With Martineau dead, the haunting is expected to end.
Key Events
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Bodies Hidden Below — The séance indicates that the bodies were concealed in a disused water tank beneath the floor. Characters: Dr. Fawcett
Location: Disused Water Tank
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Water Tank Confirmed — Guy and Dr. Fawcett locate the tank and confirm the séance's account. Characters: Dr. Fawcett
Location: Disused Water Tank
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Mansel's Suicide — Before the authorities are notified, Mansel commits suicide on the deck.
Location: Cyclops Deck
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Mansel's Identity Exposed — A burn scar on Mansel's arm leads Guy to conclude that he was Professor Martineau. Characters: Dr. Fawcett
Location: Cyclops Deck
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The Haunting Ends — Dr. Fawcett reassures Guy that Martineau's death should end the haunting. Characters: Dr. Fawcett
Location: Cyclops
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Cyclops Sets Sail — Relieved, Guy and Margret set sail aboard the Cyclops.
Location: At Sea
Warned that it is haunted, a skeptical young couple buy a rundown yacht and fix it up to be their home-on-the-sea, only to slowly realize that it really is haunted.