Felix Marl

Mr. Parr

Felix Marl serves as a key operative for Mr. Parr, carrying out tasks within the Crimson Circle's criminal network.

Thalia Drummond

Felix Marl is deeply in love with Thalia Drummond, though their relationship is complicated by his criminal ties and her own secrets.

Derrick Yale

Derrick Yale and Felix Marl are rivals both in their pursuit of Thalia Drummond and in their opposing roles as detective and criminal.

Harvey Froyant

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

Lightman

Felix Marl and Lightman are colleagues in the criminal operations of the Crimson Circle.

Brabazon

Brabazon is a subordinate or associate of Felix Marl, involved in his criminal activities.

Mr. Parr

Felix Marl serves as a key operative for Mr. Parr, carrying out tasks within the Crimson Circle's criminal network.

Thalia Drummond

Felix Marl is deeply in love with Thalia Drummond, though their relationship is complicated by his criminal ties and her own secrets.

Thalia Drummond

Felix Marl is deeply in love with Thalia Drummond, though their relationship is complicated by his criminal ties and her own secrets.

Derrick Yale

Derrick Yale and Felix Marl are rivals both in their pursuit of Thalia Drummond and in their opposing roles as detective and criminal.

Mr. Parr

Felix Marl serves as a key operative for Mr. Parr, carrying out tasks within the Crimson Circle's criminal network.

Derrick Yale

Derrick Yale and Felix Marl are rivals both in their pursuit of Thalia Drummond and in their opposing roles as detective and criminal.

The Crimson Circle

Introduced as a central figure connected to the Crimson Circle's threats.

The Initiation

Observes the initiation from a doorway, follows the newly initiated member, and notes the car's number to trace its owner.

The Girl Who Was Indifferent

Jack Beardmore, referred to here as Jack, is the son of Old Jim Beardmore and is infatuated with Thalia Drummond.

Mr. Felix Marl

Arrives at Beardmore estate as a land speculator, displays extreme nervousness and unexplained terror, later returns secretly at night armed with a pistol.

Mr. Felix Marl

Encountered Marl on the estate, questions him about the tree, and later reports the Crimson Circle mark to Yale.

The Girl Who Ran

Mentioned as absent and puzzling to Jim Beardmore; described as a reformed thief who had a strange episode the previous day.

VI: “Thalia Drummond Is a Crook”

Visits Froyant and is disappointed not to see Thalia Drummond; later spots her leaving a pawnbroker's and learns from Parr that she is a crook.

The Stolen Idol

Jack Beardmore is present, stunned by Thalia's arrest and confesses his love for her.

IX: Thalia in the Police Court

Present as Jack Beardmore; confronts Thalia after court, declares his love, and offers marriage, which she refuses.

The Confession

Jack Beardmore accompanies Parr and Yale to the interrogation but is not present during the confession.

XII: The Pointed Boots

Destroys his pointed patent shoes to hide evidence; interrogated by Inspector Parr; shocked to learn the Crimson Circle is behind the Beardmore murder.

Mr. Marl Squeezes a Little More

Blackmails Brabazon over a past accident and a recent secret meeting; shows interest in Thalia Drummond.

XIV: Thalia Is Asked Out

Invites Thalia to dinner at the Ritz-Carlton; shows predatory interest in her.

Thalia Joins the Gang

Mentioned as the target of the robbery; his bank account has been closed by Brabazon.

Mr. Marl Goes Out

Hosts Thalia for dinner and theater, attempts to assault her, later found dead in his bedroom.

XVII: The Blower of Bubbles

Found dead in his bed, victim of poison gas bubbles.

XVIII: “Flush” Barnet’s Story

Marl is mentioned as the victim of the burglary and is reported dead, found in his bed.

The Key of River House

Jack Beardmore, now living in solitude, has inherited a fortune but is haunted by memories of Thalia Drummond. He shows a new maturity and a curious friendship with Inspector Parr.

The Messenger of the Circle

Mentioned as having swindled Froyant and being involved in land swindles in France.

XXIII: The Woman in the Cupboard

Present as Jack Beardmore; helps unbuckle Yale's straps and questions the escape.

£10,000 Reward

Mentioned as a former member of a French bank fraud gang and a convicted murderer who turned state's evidence; his house was burgled by Flush Barnet.

Mr. Parr's Mother

Jack Beardmore, using his alias Felix Marl, visits Inspector Parr at home to discuss the case.

A Shot in the Night

Visits Inspector Parr at his home, discusses the Crimson Circle, and witnesses the shooting.

XXIX: “The Red Circle”

Mentioned as an associate of Lightman in the Nimes Bank robbery and murders; was released after giving evidence.

A Trip to the Country

Meets Parr in the park and invites him to his country house.

The Posters

Deceased; Parr investigates Marl's claim about seeing James Beardmore on the terrace and finds it false.

Blackmailing a Government

Mentioned in Jack Beardmore's discovery of his father's papers, which reveal Marl's criminal past and a sealed envelope marked 'Photograph of Execution.'

Thalia Lunches with a Cabinet Minister

His criminal past in France is discussed; Parr investigated his activities and his connection to Lightman.

The Circle Meets

Referred to as Jack Beardmore; he is at the Merros Club and scowls jealously upon seeing Thalia with Willings.

XXXVII: “I Will See You—If You Are Alive”

Jack remembers Thalia spent the evening with Marl on the night he died mysteriously, fueling his jealousy and suspicion.

A Prison Diet

Mentioned as a possible suspect for the Crimson Circle.

A Prison Diet

Distraught over Thalia's arrest; discusses the case with Parr.

The Escape

Mentioned as Jack Beardmore, who gave Thalia a photograph to post that was later tampered with.

Who Is the Crimson Circle?

Mentioned as having been associated with Lightman in a crime and later murdered by the Crimson Circle.

XLII: Mother

Jack Beardmore is present throughout the chapter, learning the truth about Thalia and Yale.

The Story Continued

Revealed as a fellow criminal of Yale from Toulouse Gaol; he panicked upon seeing Yale and wrote a threatening letter.