Citadel of Fear (1918) – Two men explore in Mexico for gold. One is thankful to leave with his life. The other, left behind to die, finds evil incarnate— Aztec hounds turned loose on the modern world.

Citadel of Fear – In Tlapallan, lost city of an ancient race, lay the black stone of evil incarnate. And then a man from the outside world became the agent of its awful power. . . .

Chapter I – Hidden In The Hills

Chapter II – The Moth Girl

Chapter III – The Guardians Of The Hills

Chapter IV – Tlapallan Or—

Chapter V – Gold

Chapter VI – The Black Eidolon

Chapter VII – The Cloak Of Xolotl

Chapter VIII – Before The Black Shrine

Chapter IX – Maxatla Speaks

Chapter X – The First Visitation

Chapter XI – The Red-Black Trail

Chapter XII – The Opinion Of Mr. MacClellan

Chapter XIII – The Bungalow Sold

Chapter XIV – The Second Visitation

Chapter XV – The Third Visitation

Chapter XVI – Admitted

Chapter XVII – A Surprise And A Disappointment

Chapter XVIII – A Voice

Chapter XIX – Cliona Receives A Guest

Chapter XX – The Fourth Visitation

Chapter XXI – Cliona Meets A Stranger

Chapter XXII – A Herder Of Goblins

Chapter XXIII – The “Lord Of Fear”

Chapter XXIV – A Lonely Traveler

Chapter XXV – The White Beast-Hand

Chapter XXVI – To Undine

Chapter XXVII – Strange Victim— Stranger Conqueror

Chapter XXVIII – Rival Claimants

Chapter XXIX – A Golden Flask

Chapter XXX – The Gate Lodge Again

Chapter XXXI – A Strange Battlefield

Chapter XXXII – The Battle Of The Doorway

Chapter XXXIII – As One Triumphant

Citadel of Fear was first published in The Argosy Weekly in 1918.

Citadel of Fear contains 9 illustrations.