Plot Analysis Summary
A stolen Leonardo, a murdered painter, and a threatened witness expose a collector's forgery conspiracy.
Story Structure — 5 Plot Phases
The Dockside Decoy
A cargo shipment reaches London under cover of darkness, and a crate is stolen during a staged disturbance. Smith's investigation brings the security crisis to the Tate Gallery.
Key Events
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Cases Reach London — A cargo ship unloads wooden cases at night.
Location: London docks
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Dockside Fracas — A disturbance allows a shady figure to steal one crate.
Location: London docks
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Smith Revealed — Smith identifies himself as an insurance investigator after the struggle. Characters: Smith
Location: London docks
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Tate Authorities Consulted — The investigators report the attempted theft to Tate authorities. Characters: Smith, Randall
Location: Tate Gallery
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Painting Unwrapped — The security man reveals that the original was hidden in the ship's safe. Characters: Randall
Location: Tate Gallery
A Gallery Under Suspicion
The original painting is temporarily revealed, but the investigators suspect an insider because the thieves knew the correct crate. Mary and Henry enter the gallery investigation as the exhibition approaches.
Key Events
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Painting Unwrapped — The security man reveals that the original was hidden in the ship's safe. Characters: Randall
Location: Tate Gallery
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Mole Suspected — The investigators infer that someone at the Tate knew which crate contained the painting. Characters: Smith, Randall
Location: Tate Gallery
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Earlier Forgeries Linked — The attempted theft is linked to earlier Leonardo substitutions in Florence and New York. Characters: Smith, Randall
Location: Tate Gallery
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Mary Admits A Visitor — Mary brings a suspicious-looking man into the opening through the basement. Characters: Mary Mason
Location: Tate Gallery basement
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Henry Identified — The visitor is revealed to be Mary's father, Henry, a minor painter. Characters: Mary Mason, Henry Mason, Randall
Location: Tate Gallery
Death At The Quayside
Poor security allows the Leonardo to be stolen, followed by an attack on the investigator. Henry is found hanging, and the apparent suicide becomes a suspected murder.
Key Events
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Painting Stolen — Weak Tate security allows the Leonardo painting to be stolen. Characters: Randall
Location: Tate Gallery
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Pursuit Fails — The fleeing thief escapes a weak pursuit.
Location: Tate Gallery
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Night Attack — Two thugs assault the security man after his evening with Mary.
Location: London street
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Smith Intervenes — Smith appears and saves the attacked investigator from worse violence. Characters: Smith
Location: London street
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Quayside Lair Found — Smith and the security man inspect Henry's isolated painting workspace. Characters: Smith, Henry Mason
Location: Henry's quayside lair
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Henry Found Dead — Henry is discovered hanging in what appears to be a suicide. Characters: Smith, Henry Mason
Location: Henry's quayside lair
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Murder Suspected — The security man persuades Smith that Henry was murdered and finds a useful clue. Characters: Smith, Henry Mason
Location: Henry's quayside lair
The Collector Unmasked
Sir Richard is revealed as the collector of three stolen masterpieces and orders Mary eliminated. He also poisons an accomplice who threatens to expose him.
Key Events
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Three Paintings Displayed — Sir Richard is found admiring three stolen Leonardo paintings. Characters: Sir Richard Aldingham
Location: Sir Richard's home
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Murder Order Given — Sir Richard orders Mary killed to prevent her from raising suspicion. Characters: Sir Richard Aldingham
Location: Sir Richard's home
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Poisoned Departure — Sir Richard poisons the disobedient accomplice and sends him away. Characters: Sir Richard Aldingham
Location: Sir Richard's home
Acid At The Masterpiece
Sir Richard lures Mary to his home and prepares to kill her. A threat against the painting disrupts the attack, exposes the forgery, and leads to Sir Richard's arrest.
Key Events
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Mary Lured Home — Sir Richard brings Mary home under a false promise of comfort. Characters: Mary Mason, Sir Richard Aldingham
Location: Sir Richard's home
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Acid Threat Unleashed — The security man threatens the painting with acid to stop Sir Richard's attack on Mary. Characters: Mary Mason, Sir Richard Aldingham
Location: Sir Richard's home
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Pistol Falls — Sir Richard rushes toward the painting, drops his gun, and Mary retrieves it. Characters: Mary Mason, Sir Richard Aldingham
Location: Sir Richard's home
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Forgery Exposed — The security man explains that Henry had stolen a forgery, exposing Sir Richard's deception. Characters: Mary Mason, Sir Richard Aldingham
Location: Sir Richard's home
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Sir Richard Arrested — Mary and the security man hold Sir Richard for arrest. Characters: Mary Mason, Sir Richard Aldingham
Location: Sir Richard's home
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Original On Display — The original painting is safely displayed, while Mary moves toward marriage. Characters: Mary Mason, Randall
Location: Tate Gallery
Someone is stealing priceless paintings from the great museums of the world and replacing them with nearly flawless forgeries. Leonardo da Vinci's "Madonna and Child" is being shipped to London's Tate Gallery for a special exhibition, and Paul Mitchell is assigned to protect it. Upon the painting's arrival, Paul realizes it has been switched. Eager to collect the museum's $50,000 reward, he teams up with Mary Mason, a Tate employee, to recover the original.