The Scheme Against The Mansion
The Hidden StaircaseNathan’s effort to acquire The Mansion cheaply escalates from intimidation and theft into a campaign that nearly drives its owners away.
increasing
Bearing strength in each event
decreasing
A Disputed Option

A Predatory Offer
A Claim Rejected
Nathan Gombet claims that Rosemary Turnbull and Floretta Turnbull gave him an option to buy their home for six thousand dollars. They deny making such an agreement.
A Valuable Property
The sisters understand that the house may be worth much more, especially if the city uses it as a museum. Nathan’s claim establishes his financial interest in the property.
The Frightening Campaign

Pressure at Home
Unexplained Intrusions
Strange sounds, shadows, music, and missing possessions make the sisters feel watched. The incidents are not random in effect: they steadily undermine the women’s confidence in their home.
A Calculated Atmosphere
The apparent supernatural quality keeps the sisters from identifying an ordinary intruder. Their fear makes Nathan’s low offer more tempting than it would otherwise be.
The Offer Returns

Fear Meets a Deadline
A Renewed Proposal
Nathan visits the sisters and repeats his offer to buy The Mansion. Exhausted by the disturbances, they agree to sign if he returns that afternoon.
The Threat of Displacement
Their decision shows how close his pressure has come to succeeding. Nancy’s revelation of the hidden passage arrives before the sale becomes final.
The Route Reveals the Motive

A Scheme Made Visible
Access Without Detection
Nancy demonstrates how hidden openings let Nathan enter and leave without passing the sisters’ bedrooms. The secret route explains the intrusions that had seemed impossible.
The Low-Price Strategy
The discoveries link Nathan’s access to the thefts and make his pressure campaign intelligible. He sought not merely to frighten the women but to benefit from their eventual surrender of the property.
The Sale Averted

Home Restored
The Offer Loses Its Power
With Nathan in custody, the sisters no longer face the same concealed threat. Their decision to sell under pressure is no longer necessary.
A Secure Future
Rosemary and Floretta recover their home and decide to close the secret openings. Their security depends on exposing the scheme rather than yielding to it.
The spring before Nancy's visit
The weeks before Nancy arrives
The morning Nancy reveals she solved the mystery
Later that morning in the attic and bedrooms
After the police arrest Nathan