American writer of macabre tales (3)

I believe the answer is:

poe

(Other definitions for poe that I've seen before include "Edgar Allan . . ., American writer of creepy stories" , "US horror master" , "Edgar Allan . . ., writer of spooky tales" , "Fall of House of Usher author" , "Edgar Allan ---, poet more famous for his gothic short stories" .)

I've seen this clue in The Guardian.

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