Harvey Froyant

Derrick Yale

Derrick Yale works alongside Harvey Froyant as a colleague in the investigation of the Crimson Circle.

Thalia Drummond

Harvey Froyant is an acquaintance of Thalia Drummond, interacting with her in social and investigative contexts.

Felix Marl

Felix Marl and Harvey Froyant are adversaries, with Froyant aiding the police against Marl's criminal activities.

Mr. Parr

Harvey Froyant is an enemy of Mr. Parr, actively working to expose and stop the Crimson Circle.

Felix Marl

Felix Marl and Harvey Froyant are adversaries, with Froyant aiding the police against Marl's criminal activities.

Derrick Yale

Derrick Yale works alongside Harvey Froyant as a colleague in the investigation of the Crimson Circle.

Felix Marl

Felix Marl and Harvey Froyant are adversaries, with Froyant aiding the police against Marl's criminal activities.

Mr. Parr

Harvey Froyant is an enemy of Mr. Parr, actively working to expose and stop the Crimson Circle.

Thalia Drummond

Harvey Froyant is an acquaintance of Thalia Drummond, interacting with her in social and investigative contexts.

Mr. Parr

Harvey Froyant is an enemy of Mr. Parr, actively working to expose and stop the Crimson Circle.

Derrick Yale

Derrick Yale works alongside Harvey Froyant as a colleague in the investigation of the Crimson Circle.

Thalia Drummond

Harvey Froyant is an acquaintance of Thalia Drummond, interacting with her in social and investigative contexts.

The Crimson Circle

Referenced as a potential victim or participant in the Crimson Circle's schemes.

The Girl Who Was Indifferent

Thalia's employer, a stickler for conventions, who interrupts her conversation with Jack and later discovers the crimson circle.

Mr. Felix Marl

Present at the estate for land transfer discussions, recognizes Marl, and reacts with irritation to Marl's erratic behavior.

VI: “Thalia Drummond Is a Crook”

Jack Beardmore visits him and finds him in a pitiable state of nerves.

The Stolen Idol

His address is given by Thalia; his collection of Eastern antiquities is relevant to the stolen idol.

The Charge

Blanches at the detective's arrival, reveals Thalia's low wages and theft, and charges her.

IX: Thalia in the Police Court

Attends court and expresses anger that Thalia was not imprisoned; holds strong views on property and suspects her involvement with the Crimson Circle.

X: The Summons of the Crimson Circle

Recalled by Thalia as a miserly and distrustful employer who measured and counted everything in his household.

Thalia Accepts an Offer

Decides to pay the Crimson Circle ransom after receiving a threat, appearing aged and distressed.

The Key of River House

Froyant has decided to pay the Crimson Circle's demand, as mentioned by Parr. Jack comments on Froyant's character, noting he will eventually seek revenge.

The Messenger of the Circle

Froyant angrily confronts Yale about using Thalia, reluctantly hands over the banknotes, and mentions his losses from Marl's schemes.

XXIII: The Woman in the Cupboard

Furious about the theft but then calmly accepts the loss and tells Yale to send his bill.

£10,000 Reward

Most affected by the poster; he retrieves his list of stolen banknotes and hires Heggitts to trace them, anxious about the Crimson Circle's retaliation.

The Tenant of River House

Contacted by Parr regarding the recovered money; disappointed that he cannot claim it.

XXIX: “The Red Circle”

Takes personal charge of investigating the Crimson Circle, tracing a banknote to France and uncovering Lightman's identity as the Red Circle.

XXX: The Silencing of Froyant

Returns from France and is murdered in his study before he can reveal his secret about the Crimson Circle.

The Escape

Referenced in connection with the glove found at his study, matching the one discovered at Thalia's house.

XLII: Mother

Mentioned as Thalia's former employer; his golden image was pawned by Thalia as part of her cover.

The Story Continued

Murdered by Yale after identifying him as Lightman; his death was staged as part of Yale's scheme.