Citadel of Fear (Unabridged‪)‬

Two adventurers discover a lost city in the Mexican jungle, returning not only with an ancient idol, but also an unimaginable horror that threatens the existence of the world.

Hailed as a masterpiece by H.P. Lovecraft, Citadel of Fear is the masterwork of Gertrude Barrows Bennett, the first female writer of fantasy and horror in the United States, who published under the pseudonym, Francis Stevens.