Fear is a psychological thriller-horror novella by American writer L. Ron Hubbard, which first appeared in the magazine Unknown Fantasy Fiction in July 1940.

Having just returned from an expedition to the Yucatán, Professor of ethnology James Lowry is a disbeliever in spirits, demons or the supernatural.

If you find your four hours then you will die..." Lowry is suspicious that Tommy may be having an affair with his wife, Mary, even in his dreams of demons.

He wakes up in the middle of the night to shadows that are leading him out of his bedroom and out into his garden which has transformed into a vast slope.

[2] Groff Conklin, reviewing the novella's first book publication, praised it as "a totally unexpected masterpiece of horror".