Oliver Haddo

Margaret Dauncey

Margaret becomes the object of Oliver Haddo's obsessive manipulation and dark influence, leading to her victimization.

Arthur Burdon

Arthur and Oliver are bitter enemies, with Arthur opposing Oliver's sinister influence over Margaret.

Susie Boyd

Oliver Haddo views Susie with contempt and attempts to manipulate or undermine her, creating a tense dynamic.

Dr. Porhoët

Dr. Porhoët is suspicious of Oliver Haddo's dark practices and opposes him, though their conflict is largely intellectual.

Burkhardt

Burkhardt is an acquaintance of Oliver Haddo, likely involved in occult circles.

Clayson

Clayson is an associate of Oliver Haddo, connected through shared interests or activities.

Marie Porhoët

Marie Porhoët is a relative of Dr. Porhoët and has limited social interaction with Oliver Haddo.

Frank Hurrell

Frank and Oliver are acquaintances, with Frank likely wary of Oliver's character.

Arthur Burdon

Arthur and Oliver are bitter enemies, with Arthur opposing Oliver's sinister influence over Margaret.

Margaret Dauncey

Margaret becomes the object of Oliver Haddo's obsessive manipulation and dark influence, leading to her victimization.

Arthur Burdon

Arthur and Oliver are bitter enemies, with Arthur opposing Oliver's sinister influence over Margaret.

Susie Boyd

Oliver Haddo views Susie with contempt and attempts to manipulate or undermine her, creating a tense dynamic.

I

A stout, showily dressed man interested in the occult; introduced as a fellow student at the Arsenal library.

III

Arrives late, insults patrons to secure a seat, orders a bizarre meal, and boasts of lion hunting and noble birth.

IV

Demonstrates occult abilities, including causing a horse to tremble and handling a poisonous viper, to the group's dismay.

V

Present at Dr. Porhoët's, discusses Eliphas Levi and the raising of Apollonius of Tyana's spirit.

VI

Subject of Frank Hurrell's letter; described as charismatic, cruel, unscrupulous, and mysterious.

VII

Sends masses of chrysanthemums; kicks Margaret's dog after being bitten; offers a disconcerting apology; later delivers a fervent speech about alchemy and homunculi.

Chapter VIII

Haddo feigns a heart attack to enter Margaret's studio, performs a hypnotic ritual, and subjects her to disturbing visions. He leaves his address before departing mysteriously.

IX

Exerts hypnotic control over Margaret, calmly expecting her visit and arranging their marriage.

X

Married Margaret; sent a mocking telegram to Dr. Porhoët; suspected of using supernatural influence or revenge to force the marriage.

Chapter XI

Continues his scandalous behavior in Monte Carlo, involved in occult practices and orgies; grows more corpulent and alarming in appearance.

XII

Visits Arthur to threaten a counter-petition; later sends a taunting message after Margaret returns to him.

XIII

Haddo is described as a local magnate with eccentric and reclusive behavior, including sending all servants away at night and being feared by locals for his supposed magical influence. He is the source of Arthur's anxiety about Margaret.

XIV

Mocks Arthur's accusations and refuses to allow him entry to Skene.

XVI

The antagonist who intrudes and is strangled by Arthur; his dead body is later found in his laboratory among monstrous creations.