Story Structure — 4 Plot Phases
The Underwater Captivity
Paul's solitary fishing holiday is interrupted when Miranda drags him into her underwater cavern. After a week of imprisonment, Paul negotiates his freedom by promising to show Miranda London.
Key Events
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Paul's Solo Fishing Trip — Paul leaves uninterested wife Clare for a quiet holiday. Characters: Dr. Paul Martin
Location: Cornwall coast
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Miranda Pulls Fishing Line — Miranda tugs the line, causing Paul to fall into the water. Characters: Miranda Trewella, Dr. Paul Martin
Location: Cornwall coast
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Underwater Imprisonment — Miranda drags Paul down and holds him captive for a week. Characters: Miranda Trewella, Dr. Paul Martin
Location: Underwater cavern
London Disguise and Hires
Paul brings Miranda to London, disguising her as an invalid patient with specially ordered dresses. He reluctantly hires the eccentric Nurse Carey to manage the secret arrangement.
Key Events
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The London Bargain — Paul agrees to show London in exchange for his freedom. Characters: Miranda Trewella, Dr. Paul Martin
Location: Underwater cavern
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Release to Surface — Miranda releases Paul, ending the underwater captivity. Characters: Miranda Trewella, Dr. Paul Martin
Location: Cornwall coast
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Ordering Disguise Dresses — Paul orders special dresses to cover Miranda's tail. Characters: Dr. Paul Martin
Location: London couturier
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Invalid Patient Disguise — Paul disguises Miranda as a sick patient for a three-week stay. Characters: Dr. Paul Martin, Miranda Trewella
Location: London home
Romantic Chaos and Rivalry
Miranda's enchanting presence sparks infatuation among Paul, his chauffeur Charles, and Nigel. Nigel breaks his engagement, causing jealousy and romantic competition.
Key Events
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Clare's Reluctant Acceptance — Clare reluctantly agrees to the arrangement but demands a caregiver. Characters: Dr. Paul Martin, Miranda Trewella
Location: London home
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Hiring Nurse Carey — Paul selects the eccentric Nurse Carey to look after the patient. Characters: Dr. Paul Martin, Nurse Carey
Location: London home
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Carey's Delight — Carey is thrilled to work for a mermaid and takes Miranda into confidence. Characters: Nurse Carey, Miranda Trewella
Location: London home
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Paul's Enchantment — Miranda's seductive nature begins to captivate Paul. Characters: Miranda Trewella, Dr. Paul Martin
Location: London home
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Charles's Infatuation — The chauffeur Charles becomes deeply infatuated with Miranda. Characters: Miranda Trewella, Charles
Location: London streets
The Thames Escape
Clare's suspicion forces Paul to confess Miranda's true nature. Upon overhearing plans to expose her, Miranda flees down the Thames, returning to the sea for a peaceful finale.
Key Events
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Nigel's Broken Engagement — Nigel breaks off his engagement to Isobel after being seduced. Characters: Miranda Trewella, Nigel
Location: London streets
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Women's Jealousy — Miranda's presence arouses jealousy among the local women. Characters: Miranda Trewella
Location: London streets
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Rivals Discover Flirtation — Charles and Nigel realize Miranda flirted with both of them. Characters: Charles, Nigel, Miranda Trewella
Location: London streets
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Rivals Reconcile — Both men come to their senses and drop their rivalry. Characters: Charles, Nigel
Location: London streets
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Clare's Suspicion — Clare strongly suspects Miranda is a mermaid and forces a confession. Characters: Dr. Paul Martin, Miranda Trewella
Location: London home
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Overheard Secret — Miranda overhears Clare insisting the public must be told. Characters: Miranda Trewella, Dr. Paul Martin
Location: London home
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Thames Escape — Miranda wheels herself down the Thames and escapes into the water. Characters: Miranda Trewella
Location: Thames river
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Final Rock Scene — Miranda rests on a rock, holding a merbaby on her lap. Characters: Miranda Trewella
Location: Rock
A young married physician discovers a mermaid, and gives into her request to be taken to see London. Comedy and romantic entanglements ensue.