Shades of Darkness,
«The Horror of the Heights» by Arthur Conan Doyle first appeared in The Strand Magazine © 1913.
The Strand Magazine
«Nightmare at 20,000 Feet» by Richard Matheson first appeared in Alone by Night, Michael & Don Congdon (eds.) Ballantine Books © 1961. Reprinted by permission of the author’s estate and Don Congdon Associates, Inc.
Alone by Night
«The Flying Machine» by Ambrose Bierce first appeared in Fantastic Fables, Putnam © 1899.
Fantastic Fables
«Lucifer!» by E. C. Tubb first appeared in Vision of Tomorrow #3 © 1969. Reprinted by permission of Cosmos Literary Agency and the Author’s Estate.
Vision of Tomorrow #3
«The Fifth Category» by Thomas Carlisle Bissell first appeared in The Normal School © 2014. Reprinted by permission of the author.
The Normal School
«Two Minutes Forty-Five Seconds» by Dan Simmons first appeared in Omni Magazine © 1988. Reprinted by permission of the author.
Omni Magazine
«Diablitos» by Cody Goodfellow first appeared in A Breath from the Sky: Unusual Stories of Possession, Scott R Jones (ed.), Martian Migraine Press © 2017. Reprinted by permission of the author.
A Breath from the Sky: Unusual Stories of Possession
«Air Raid» by John Varley first appeared in Asimov’s Science Fiction © 1977. Reprinted by permission of the author.
Asimov’s Science Fiction
«You Are Released» © 2018, Joe Hill
«Warbirds» by David J. Schow first appeared in A Dark and Deadly Valley, Mike Heffernan (ed.), Silverthought Press © 2007. Reprinted by permission of the author.
A Dark and Deadly Valley