The Secret Toll

In Short

This mystery follows Robert Forrester, a civil engineer and war veteran, as he takes on a clandestine criminal gang known as the "Friends of the Poor" that systematically terrorizes Chicago’s wealthy citizens. When the police prove unable to halt the group's lethal extortion tactics, Forrester employs his own analytical mind to track them, inadvertently crossing paths with a mysterious woman, Mary Sturtevant. The story endures as a period piece of early 1920s detective fiction, capturing the era’s fascination with amateur sleuthing, social class, and the lingering anxieties of post-war civilian life.

The Story

Robert Forrester, a veteran of the Great War, returns to his life in Chicago only to find the city gripped by an extortion scheme. Prominent men are receiving threatening notes demanding large sums of money, with those who refuse ending up dead from mysterious asphyxiation. Dissatisfied with the ineffective police response, Forrester decides to apply his engineering background to the hunt. He begins by investigating a hollow oak tree where victims are instructed to leave their payments. His inquiries lead him to local rumors of a "haunted" tree and a reclusive woman named Lucy, who lives in the woods nearby and possesses an unsettling knowledge of the area.

As Forrester digs deeper, he meets Mary Sturtevant, a woman who captivates him immediately. Despite his burgeoning love for her, he is increasingly disturbed by evidence linking her to the criminal underworld. During a high-society dance, a man is found dead in the conservatory, and a piece of fabric with a suspicious, pungent odor—the same scent associated with his own near-fatal run-in with a gas-wielding assailant—is discovered nearby. Forrester’s suspicion of Mary grows, yet he remains torn between his duty to expose the gang and his feelings for her. He develops a "triangulation" theory to map the locations of the crimes, suspecting that the criminals are operating from a hub that connects Lucy, Mary, and the victims.

Forrester’s investigation eventually leads him to a hidden underground passage where he engages in a desperate, physical struggle with a masked figure. Overpowered by the same lethal gas used on the other victims, Forrester loses consciousness. He awakens to find himself being cared for by Mary, who finally confesses her love for him. He learns that the case was actually a complex sting operation led by authorities who were using him as an unwitting player. The "Friends of the Poor" are revealed to be led by Prentice, a man Forrester once considered an acquaintance. In the final confrontation, the criminals meet their own end through the very gas they used to terrorize others. The mystery is resolved with the death of the perpetrators, and Forrester is left to begin a new life with Mary, fully cleared of her perceived involvement in the gang’s schemes.

How It Unfolds

The toll is exacted. Forrester receives a threatening note demanding money and realizes that the local police are unable to stop the criminals who are murdering his peers.

Engineering-criminology. Applying his skills as a civil engineer, Forrester treats the investigation like a structural problem, seeking logical patterns in the criminals' movements and the geography of the crime scenes.

The haunted tree. Forrester investigates a hollow oak where money is deposited, encountering local superstitions about ghosts that point toward the involvement of a woman named Lucy.

A puzzling warning. Forrester is repeatedly warned by anonymous callers to abandon his search, but his growing involvement with Mary Sturtevant makes it impossible for him to retreat.

The fatal dance. A murder at a social gathering provides the crucial physical evidence that links the "Friends of the Poor" to a specific, identifiable chemical gas.

Triangulation. Forrester creates a map of the victims and the suspects, identifying a geometric connection that points directly to the hidden base of the gang.

Face to face. Forrester infiltrates the suspects' territory, engaging in a final, climactic fight with the masked leader of the gang that nearly costs him his life.

The invisible detective. The truth is revealed: the authorities were monitoring the entire situation, and the tragic, violent end of the gang leaves Forrester to reconcile his past love and his future.

The People

Robert Forrester is the story’s driven, analytical protagonist. A veteran and engineer, he is motivated by a sense of duty to protect his social circle, though his objectivity is frequently clouded by his intense, impulsive attraction to Mary Sturtevant. Mary Sturtevant is the enigmatic romantic lead. She remains a figure of mystery for most of the book, acting with a self-reliance that often makes her appear complicit in the crimes, yet she ultimately reveals a steadfast love for Robert. Prentice, a man who acts as a mentor and confidant to Robert, serves as the primary antagonist, hiding his villainy behind a mask of social respectability. Joshua, a local worker, provides the perspective of the marginalized community, introducing the supernatural elements that frame the "haunted" nature of the central crime scene.

In Its Own Voice

"I'm damned if I give up a cent! I'll die first!"

Robert Forrester reacts with defiance after receiving an extortion notice from the criminal gang.

"Dat ain't no men, Boss! Jes' hants!"

A local man named Joshua explains the superstitious terror surrounding the oak tree where the ransom money is left.

"The fate that has so strangely thrown us together still holds us in its hands."

Mary Sturtevant explains her reluctance to return Robert’s affection before the danger of the extortion ring is fully resolved.

What It's Really About

The book explores the collision between rigid, logical systems—represented by Forrester’s engineering mindset—and the chaotic, unpredictable nature of human malice. It questions how much an individual can truly know about the people they trust, especially in the wake of the social upheaval caused by the Great War. The narrative treats the "Friends of the Poor" not just as a criminal entity, but as a symptom of a society that has lost its moral compass. Ultimately, the story asks whether a person can maintain their integrity and find personal happiness when they are surrounded by a pervasive, hidden evil that blurs the line between victim and perpetrator.

Why Read It Today

Readers who enjoy the atmosphere of 1920s Chicago, with its jazz-age socialites, exclusive clubs, and gritty urban mysteries, will find the setting particularly engaging. The book captures a specific, post-war sensibility—a mix of cynicism and a desperate search for order—that feels remarkably distinct from modern thrillers. However, readers should be prepared for the period-typical, often condescending racial attitudes regarding the characters in the woods, which reflect the prejudices of the era rather than a nuanced depiction of that community. The pacing is deliberate, favoring long, philosophical conversations over non-stop action, which creates a classic, "cozy" mystery feel despite the violent subject matter. Those who appreciate the trope of the "amateur detective" who outsmarts the police will find a very traditional, satisfying example here. It is a rewarding read for anyone curious about the evolution of the detective genre and the way early 20th-century authors blended romance with the rising anxieties of a modernizing, sometimes terrifying, metropolitan life.