The Race Against Escape

The Hidden Staircase

Once Nancy has found the passage, the investigation becomes a race to reach Nathan before he escapes or destroys the evidence.

increasing

Bearing strength in each event

decreasing

A Theory Needs Proof A Theory Needs Proof from "The Hidden Staircase". Suspicion Is Not Enough A Likely Culprit Nancy believes Nathan is behind the disturbances because he has a motive and keeps birds.

A Theory Needs Proof from "The Hidden Staircase". Suspicion Is Not Enough A Likely Culprit Nancy believes Nathan is behind the disturbances because he has a motive and keeps birds.

Suspicion Is Not Enough A Likely Culprit Nancy believes Nathan is behind the disturbances because he has a motive and keeps birds. She knows that belief alone cannot secure an arrest. A Risky Decision She chooses to investigate his home directly, hoping to find the evidence that the sheriff will require. The search carries personal danger as well as legal risk.

Discovery at Personal Cost Discovery at Personal Cost from "The Hidden Staircase". Evidence Found, Danger Increased A Hidden Connection Nancy discovers the concealed route and confirms that the houses are linked.

Discovery at Personal Cost from "The Hidden Staircase". Evidence Found, Danger Increased A Hidden Connection Nancy discovers the concealed route and confirms that the houses are linked.

Evidence Found, Danger Increased A Hidden Connection Nancy discovers the concealed route and confirms that the houses are linked. The breakthrough identifies how Nathan could enter The Mansion. An Injured Investigator She falls down the steps and continues in darkness with a bruised head and weakening flashlight. The discovery advances the case while leaving her vulnerable.

The Sisters Confirm the Route

The Case Becomes Public A Shared Inspection Nancy shows the sisters the attic entrance and the openings into rooms and sofas. They confirm that the architecture explains the apparently impossible movements. Delay Has a Cost The investigators spend time tracing additional passages instead of immediately calling the police. Nancy wants certainty, but the delay could give Nathan time to act.

The Failed Front Door The Failed Front Door from "The Hidden Staircase". The Suspect May Be Inside A Noisy Approach The sheriff’s police car races to the house and the officers knock at the locked door.

The Failed Front Door from "The Hidden Staircase". The Suspect May Be Inside A Noisy Approach The sheriff’s police car races to the house and the officers knock at the locked door.

The Suspect May Be Inside A Noisy Approach The sheriff’s police car races to the house and the officers knock at the locked door. Nancy fears the commotion will warn Nathan. An Armed Servant The servant confronts the officers with a shotgun and forces them away from the kitchen door. The attempt to enter has stalled without securing the prisoner.

The Passage Wins the Race The Passage Wins the Race from "The Hidden Staircase". A Quieter Route Nancy’s Alternative Nancy proposes entering through the passage from The Mansion.

The Passage Wins the Race from "The Hidden Staircase". A Quieter Route Nancy’s Alternative Nancy proposes entering through the passage from The Mansion.

A Quieter Route Nancy’s Alternative Nancy proposes entering through the passage from The Mansion. The officers follow her through the library sofa and the concealed stairway. The Final Confrontation The route brings them into the house without repeating the failed entry. They arrest the servant, locate Carson, and capture Nathan before he can escape.

Before Nancy’s nighttime visit to Nathan’s house

During the stormy night in the passage

The next morning in The Mansion’s attic

After the sheriff’s party arrives at Nathan’s house

Immediately after the servant blocks the kitchen