"Where is everybody?" Nobel Prize-winning physicist Enrico Fermi once asked after a discussion about the possibility of intelligent life elsewhere in the universe. To sum up the Fermi Paradox, if the billions of stars in our galaxy have planets with intelligent life on them, why hasn't anyone visited us?

But maybe they have, and we just haven't noticed--and that's the way they want it. And if they are here in secret, why are they here? Are they tourists? Anthropologists, perhaps? Or journalists sending stories back about the quaint habits of the primitives? Or maybe the extraterrestrial equivalent of hunters or fishermen? (Any odd disappearances in your neighborhood lately?) An enemy already within the gates? Or a refugee seeking sanctuary? Gourmets looking for exotic foreign food? Alien criminals hiding out? Alien cops looking for those alien criminals? No missionaries--at least not yet--and there doesn't seem to be a Galactic Peace Corps. They might happen to look close enough to human to pass, or they might be masters of disguise. Or they might be so incomprehensibly different that we don't even notice that they're here.

The secret visitors are revealed by such luminaries as Larry Niven, Poul Anderson, Spider Robinson, Neil Gaiman, and more. And if any alien visitors want to check out the local natives' speculations herein, feel free. Please pay with local currency, of course.

Praise for previous anthologies edited by Hank Davis:

About Time Troopers:

"The editors' mastery of the military SF and time travel subgenres is evident in their thoughtful selections. Fans of literate speculative fiction will hope for more from these experts."--Publishers Weekly

Cosmic Corsairs:
"Who doesn't like space pirates? (Well, their victims I guess, but that's beside the point.) . . . Hank Davis has a fine sense for choosing a wide mix of stories, and this book is no exception. No story is like another, yet they manage to form a whole greater than the parts. From sapient ships to piratical sibling rivalry, pirate detectives to ingenious captives seeking freedom, from alien biology to orbital mechanics, the stories share some of the same elements--pragmatic thinking, moral complexity, loyalty, and betrayal. Definitely a fun one."--Analog

In Space No One Can Hear You Scream:
"[T]he 13 tales in this collection blend sf with horror to demonstrate the resiliency of both genres . . . offers strong tales by the genre's best storytellers." --Library Journal

"[F]irst-rate science fiction, demonstrating how short stories can still entertain." --The Galveston County Daily News

A Cosmic Christmas 2 You:

"This creative and sprightly Christmas science fiction anthology spins in some surprising directions. . . . A satisfying read for cold winter evenings . . . a great stocking stuffer for SF fans." --Publishers Weekly

As Time Goes By:

"As Time Goes By . . . does an excellent job of exploring not only romance through time travel--relationships enabled or imperiled by voyaging through time--but the intrinsic romance of time travel itself. . . . The range of styles and approaches is as wide as the authors' sensibilities and periods might suggest . . . full of entertaining and poignant stories . . . " --Alvaro Zinos-Amaro, IntergalacticMedicineShow.com

About Star Destroyers, coedited by Christopher Ruocchio:
". . . spectacular space battles and alien contacts . . . themes of military ethics, the uses of artificial intelligence, and the limits of the capacity of the human mind. . . . it is the human interactions and decisions that ultimately drive the stories. . . . will appeal to fans of military and hard science fiction and any readers fascinated by the possibilities of space travel."--Booklist

". . . stories of giant spaceships at war, at peace, and in the often-gray areas between. . . . a worthy addition to a long tradition of ship-based fiction, and its authors portray captains, arcane astrogators, and civilian child passengers with equal depth. It's recommended for fans of military SF and space adventure."--Publishers Weekly

". . . you'd probably expect some tight, action-filled space opera stories of giant space battles . . . and there's some of that. But there are also espionage stories, rescue missions, political conflicts, alternate histories, even a few humorous tales. . . . each author took the premise in a different direction . . . if I had to identify one common feature to all the stories, it would be that they're all fun. . . . Like it says, big ships blowing things up. What's not to like?"--Analog

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