(From the publisher):
Three times the dagger had appeared - destroyed - then disappeared! Three times the knife of Kukulkan hung in the sky, two hundred feet tall, while death struck. The Man Of Bronze stalks the dark secret of the blade - a quest that takes him deep into the jungle to the very edge of doom!
First published in Doc Savage Magazine # 82 December 1939 - written by Lester Dent.
Original title: The Dagger in the Sky
Genre: Fiction→ Adventure→ Male-Action/Adventure