Carl Peterson

Captain Hugh Drummond

Arch-enemies locked in a deadly, ongoing battle of wits and violence.

Henry Lakington

Peterson's chief henchman and accomplice in criminal operations.

Steinemann

A key lieutenant and co-conspirator in Peterson's criminal network.

Irma Peterson

Husband and wife, partners in crime with a volatile and manipulative bond.

Ted Jerningham

Peterson sees Jerningham as an irritating obstacle aligned with Drummond.

Captain Hugh Drummond

Arch-enemies locked in a deadly, ongoing battle of wits and violence.

Captain Hugh Drummond

Arch-enemies locked in a deadly, ongoing battle of wits and violence.

Henry Lakington

Peterson's chief henchman and accomplice in criminal operations.

Henry Lakington

Peterson's chief henchman and accomplice in criminal operations.

Irma Peterson

Husband and wife, partners in crime with a volatile and manipulative bond.

Steinemann

A key lieutenant and co-conspirator in Peterson's criminal network.

Ted Jerningham

Peterson sees Jerningham as an irritating obstacle aligned with Drummond.

Chapter II

Described as more dangerous than Lakington, with ruthless hands and a false English name.

I

Referred to as the most dangerous man in England, living at The Elms with a daughter of questionable character.

II

Present in the Rolls-Royce; inspects Drummond during the staged stop.

Chapter III

Sits calmly at the table while Lakington forces the man to sign; later comments on Drummond's 'dash and temperament.'

III: In Which Things Happen in Half Moon Street

Visits Drummond's flat, demands the return of Potts and the paper, and issues a death threat.

I

Mentioned as the man who was too quick in tearing the document, implying his involvement in the plot.

II

Peterson visits Drummond's flat, calmly demanding his property and issuing a deadly ultimatum.

III

Leads the abduction and confronts Drummond at The Elms.

In Which He Spends a Quiet Night at the Elms

Threatens Drummond and watches him from the window; shows annoyance when Irma leads Drummond to his room.

I

Sinister and calculating host; interrogates Drummond about Potts and contemplates using violence to extract information.

III

Hosts Drummond at breakfast, warns him, and reveals his stiff neck from the previous night's struggle.

IV

Interrupts the conversation, returns Mullings to Drummond, and exchanges taunts with him.

II

Implied leader of the gang; the impostor is one of his men.

VI: In Which a Very Old Game Takes Place on the Hog's Back

Observes Drummond's fight with the dog and leads the capture of Drummond.

III

Implied as the mastermind behind the kidnapping and the larger conspiracy.

IV

Observes Drummond's fight with the gorilla and orders his capture.

In Which He Spends an Hour or Two on a Roof

Presides over the meeting with calm authority, later oversees the chemical dissolution of Ivolsky's body while studying a ledger.

I

The suave, ruthless leader of the gang, orchestrates the evening's events.

II

Calmly directs the search for Drummond, discusses Ivolsky's death, and taunts Drummond during the stair trap.

Chapter III

Plans to force Potts to sign an agreement, discusses the Paris meeting, and expresses annoyance at the inconvenience.

In Which He Goes to Paris for a Night

Leaves for Paris, prompting Drummond's pursuit; associated with revolutionaries.

I

The antagonist who, along with Lakington, is outmaneuvered by Drummond; he is forced to allow Drummond to descend safely due to the presence of police and onlookers.

IX: In Which He Has a Near Shave

Disguised as the Comte de Guy in Paris; later seasick on the boat; orchestrates assassination attempt.

I

Disguised as Comte de Guy, dining with wealthy industrialists; recognized by Drummond despite his altered appearance.

III

Disguised as the Comte de Guy; receives a telegram and suffers from seasickness.

X: In Which the Hun Nation Decreases by One

Observes the capture and torture; advises finishing Drummond off; intervenes to stop Lakington's excessive whipping.

I

Present and smoking a cigar; advises finishing Drummond off but restrains Lakington's excessive violence at times.

III

Revealed as the leader of a unified revolutionary organization; expected back the next day.

XI: In Which Lakington Plays His Last "Coup"

Mentioned as remaining at large after Lakington's death.

I

Mentioned as a target; Drummond plans to part amicably with him unless trouble arises.

In Which the Last Round Takes Place

Mentioned as the mastermind behind the revolutionary organization; expected at the meeting.

I

Mentioned as the mastermind behind the revolutionary organization; his ledger is the focus of the chapter.

Chapter II

Identified as the mastermind who proposed the syndicalist strike scheme to Potts.

III

The master-criminal whose plan is foiled; he is confronted and disarmed by Drummond.

Epilogue

Has escaped from custody, sending a taunting note to Hugh.