The Avenger

In Short

When young London gentleman Herbert Wrayson discovers a mysterious woman hiding in his rooms on the night a corrupt South African speculator is murdered, he finds himself ensnared in an international conspiracy. The dead man possessed stolen love letters belonging to a European queen, making him the target of blackmailed royalty, ruthless spies, and desperate survivors. As Wrayson works to protect the enigmatic Louise Deveney, he untangles a web of deceit stretching from West End music halls and French châteaux to the South African veldt, where long-buried secrets finally come to light.

The Story

The mystery opens in London when Herbert Wrayson returns to his chambers in the firelight to find a terrified young woman, Louise Deveney, hiding near his desk. That same evening, the body of Morris Barnes—a unsavory character who recently returned wealthy from South Africa—is discovered murdered inside a hansom cab. Wrayson realizes Louise is somehow linked to the crime, but he chooses to protect her, shielding her identity even as police interest intensifies and society circles, led by the inquisitive Colonel Deveney and the amateur detective Stephen Heneage, begin speculating on the murder.

Soon, a shadowy country solicitor named Mr. Bentham approaches Wrayson, revealing that Barnes possessed a vital stolen document that both high-society figures and dangerous conspirators are desperate to retrieve. Bentham himself is murdered shortly thereafter, signaling the lethal stakes of the search. Wrayson is drawn deeper into the affair through his interactions with the cosmopolitan Baroness de Sturm, who lives with Louise and is under strict police surveillance. As Wrayson's love for Louise grows, she abruptly flees to France, leaving him desperate to understand the forces driving her away.

Wrayson follows the trail to France, arriving at the secluded Château d'Étarpe. There, he encounters Madame de Melbain, a secluded woman of royal bearing who is actually the exiled Queen Helena of Mexonia. It emerges that while serving in the South African war, an officer named Duncan—the Queen’s former lover—had lost a packet of intimate love letters on the battlefield of Colenso. Morris Barnes had scavenged the letters, using them to extract thousands of pounds in blackmail from the Queen and her loyal court retainers, including Baroness de Sturm and Colonel Deveney.

Complicating matters, Sydney Barnes, the murdered man’s bitter and poverty-stricken brother, relentlessly hunts for his brother’s hidden fortune, suspecting everyone around him of theft. Spies hover around the French château, and old secrets resurface when it is revealed that Duncan is still alive, having built a new life in Africa after his reported death.

Through a series of confrontations in London and abroad, the truth behind the killings comes to light. The tangled threads of blackmail, stolen identity, and violent retribution culminate as the incriminating letters are finally recovered and destroyed. With the threat of public ruin lifted from the Queen, Louise is cleared of suspicion. Freed from the dark legacy of the scandal, Wrayson and Louise unite, while Duncan and Queen Helena withdraw from European intrigue to seek a fresh beginning in the quiet vastness of South Africa.

How It Unfolds

The shadow in the room Returning to his London chambers late at night, Herbert Wrayson discovers an unknown woman standing by his desk just as news breaks of a shocking murder in a nearby hansom cab.

A speculator's violent end At dinner, Colonel Deveney and Stephen Heneage analyze the murder of Morris Barnes, a disreputable man about town whose shadowy past in South Africa made him a prime target for violence.

The lawyer's hidden mission A precise solicitor named Bentham visits Wrayson to demand a missing document stolen from Barnes, exposing the reality that the murder was driven by high-stakes blackmail.

Escort to the Alhambra Wrayson accompanies the glamorous Baroness de Sturm and Louise to a West End music hall, only to discover from Heneage that the Baroness is under strict police surveillance.

The dead man's flat Wrayson assists Sydney Barnes, the victim's crude brother, in searching the dead man's chambers, where they are unexpectedly interrupted by the masked Baroness using a latch-key.

A desperate farewell Louise unexpectedly bids Wrayson good-bye in her London flat, admitting her terror of the city before fleeing across the English Channel toward the south of France.

Pursuit to the château Wrayson travels to France, staying at a quiet village inn alongside a quiet South African veteran named Duncan, while Louise and her mysterious patron hide inside the Château d'Étarpe.

The Queen's secret exposed At the château, Madame de Melbain is revealed to be Queen Helena of Mexonia, whose secret wartime love letters were stolen at Colenso and used by Barnes for ruthless extortion.

The brother's revenge Back in London, the desperate Sydney Barnes turns to open threats and blackmail as he hunts down the packet of letters to secure his brother's fortune.

Resolution in the veldt With the blackmail network broken and the letters destroyed, the survivors gather under the African sky, leaving European intrigue behind for a new life.

The People

• Herbert Wrayson: A chivalrous London gentleman who seeks only to protect Louise, finding himself thrust into the role of defender against blackmailers and international intrigue.
• Louise Deveney: A proud, haunted young woman caught in the shadow of a high-level conspiracy, driven to silence and flight to protect her family and royal patron.
• Morris Barnes: A corrupt, flashy speculator who leveraged stolen battlefield letters into a lucrative blackmail operation, meeting a swift and violent death.
• Sydney Barnes: The bitter, impoverished brother of Morris who stalks London's West End, desperate to grab the extortion money he believes is rightfully his.
• Baroness de Sturm: A polished, clever aristocrat devoted to Queen Helena, who maneuvers fearlessly through police surveillance and dangerous encounters to retrieve the stolen documents.
• Madame de Melbain (Queen Helena of Mexonia): An exiled queen living under an assumed identity, whose private past threatens to erupt into public scandal.
• Duncan: A war-weary South African veteran and former officer who carries the burden of the lost letters, seeking peace away from European politics.

In Its Own Voice

"One can easily imagine that from amongst such a slough might spring at any time the weed of tragedy."

Colonel Deveney reflects on the dangerous, fast-paced West End nightlife where the victim lived.

"Always, I shall think of London as the city of dreadful memories. I should like to be going to set my face eastwards or westwards until I was so far away that even memory had perished."

Louise reveals her overwhelming desire to escape the shadow of the crime haunting her in England.

"It is the country of eternal mysteries... Only those can know what Africa is, what it might mean to us, who shake the dust of civilization from their feet, and creep a little way into its heart."

Duncan describes the quiet, regenerative wilderness of South Africa where the long drama finally closes.

What It's Really About

Beneath its classic mystery structure, the novel explores the corrupting nature of hidden pasts and the destructive power of extortion. It contrasts the mercenary greed of the urban underworld—represented by the Empire and Alhambra supper rooms—with rigid aristocratic codes of honor that force good people into desperate lies. The story questions whether genuine morality can survive when legal systems fail to protect private lives from malicious exposure. Ultimately, it pits the exhausting, artificial deceptions of European high society against the cleansing freedom of the natural world, suggesting that true redemption requires shedding the baggage of old world politics entirely.

Why Read It Today

Readers who enjoy Edwardian melodrama, light detective fiction, and fast-paced thrillers of international intrigue will find much to admire here. The novel offers an engaging slice of period atmosphere, moving effortlessly from foggy London gentleman's clubs and West End music halls to quiet French country estates and African landscapes. The plot moves briskly, propelled by brisk dialogue and frequent twists that keep the central secret dynamic throughout.

Modern readers should be prepared for typical period tropes, including somewhat theatrical dialogue, melodramatic romantic declarations, and occasional casual class stereotyping characteristic of early 20th-century popular fiction. Sydney Barnes, for instance, is depicted with explicit Edwardian prejudices regarding his background and manners. However, for those interested in public-domain popular fiction, the book stands as an entertaining, polished specimen of E. Phillips Oppenheim’s signature style—a blend of romantic mystery, gentlemanly bravado, and high-society secrets that delivers an satisfying escape.