[Free eBook REPEAT] Dark Constellation by Alex Random [Science Fiction Adventure Thriller]

Dark Constellation by Alex Random, a pseudonym for British author Donald S. Rowland, is his vintage standalone science fiction space opera adventure thriller, free again for a limited time courtesy of publisher Endeavour Press’ Venture imprint.

This was originally published in 1975 by Robert Hale as part of their Hale SF line. The story takes place in the midst of a war between Earth and reptilian alien invaders, starring a spaceship crew on a secret mission to destroy the alien home planet, which might not make it there as mysterious happenings befall them on the way, leading to strange behaviour and sabotage and possible doom.

Offered worldwide, available at Amazon.

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[Free eBook REPEAT] Operation Omina by Roland Starr [Science Fiction Thriller]

Operation Omina by Roland Starr, a pseudonym for British author Donald S. Rowland, is the 1st novel in his Omina quartet of science fiction space adventures, free again for a limited time courtesy of publisher Endeavour Press’ Venture imprint.

This was originally published in 1970 by Lenox Hill Press.

The quartet is centred around a distant planet named Omina.This installment has suspense elements, and stars a spaceship crew headed there on a long-term mission, which discovers something startling in its staffing which may lead to terrible problems which prevent them from reaching it.

Offered worldwide, available at Amazon.

[Free eBook] The Last Walk Out: A Tribal Space Opera by David Helton [Science Fiction]

The Last Walk Out: A Tribal Space Opera by David Helton, a journalist and documentary scriptwriter, is his standalone post-apocalyptic science fiction novel with space opera elements, free for a limited time courtesy of publisher Endeavour Press’ Venture imprint.

This was originally published in 2014 by White Glove, according to the blurb at his literary agent’s, but that seems to have been a self-pub imprint that left no trace, and the Venture frontmatter copyright date is 2017, which may indicate significant revisions.

The story is set in a future a thousand years after a viral catastrophe devastated Earth’s population, leading humanity to flee to the rest of the solar system, leaving only a few naturally immune survivors behind, whose descendants are apparently secretly being watched as some sort of reality tv/nature entertainment programme, when one of the elders on the reservation leaves the settlement on a potentially society-changing adventure.

Offered worldwide, available at Amazon.

[Free eBook REPEAT] Space Trap by Juanita Coulson [Science Fiction]

Space Trap by Juanita Coulson is her science fiction space opera adventure novel, free again for a limited time courtesy of publisher Endeavour Press’ Venture imprint.

This was originally published in 1976 as #20 in the Laser Books science fiction imprint from Harlequin, which printed novels by many authors who would later go on to become prominent in the genre, such as Tim Powers. This story involves an inadvertent alien first contact after a spaceship mysteriously becomes downed on a strange planet.

Offered worldwide, available at Amazon.

[Free eBook REPEAT] A Plague in Paradise by Robert E. Vardeman [Science Fiction Adventure]

A Plague in Paradise by Robert E. Vardeman, a 1972 Hugo Award finalist for Best Fan Writer, in addition to being an author in his own right, is the 3rd novel in his Masters of Space trilogy of science fiction space adventure thrillers, free again for a limited time courtesy of publisher Endeavour Press’ Venture imprint.

This was originally published in 1987 by Avon. The series is written in the vein of old school pulp space adventures such as by E. E. Smith (creator of the Lensman series which inspired DC Comics’ Green Lantern Corps), and stars a man on the run after having been framed for thwarting a nefarious plan, and the wealthy socialite who aids and abets him.

This finale wraps up the story with previous plot points coming to a head, as a lingering part of the nefarious plan which involves unleashing a devastating virus that could destroy all alien life, and the complication of a robotics master assassin on their trail, need to be thwarted, too.

Offered worldwide, available at Amazon.

[Free eBook] Starborne by Robert Silverberg [Science Fiction]

Starborne by Robert Silverberg, an SFWA Grand Master and inductee into the Science Fiction Hall of Fame, is his standalone science fiction novel, free for a limited time courtesy of publisher Phoenix Pick Press.

This was originally published in 1996 by Bantam’s Spectra imprint.

The story is set during the 23rd century of an Earth gone stagnant, and stars a crew undergoing a deep space exploration in the hopes of discovering new worlds to colonize and thereby revitalize the human spirit, with Earth and ship kept in contact by a pair of telepathic twins until the link breaks and the crew discovers that their assumptions about life, the universe, and everything may be very mistaken indeed.

Offered DRM-free worldwide through August as their featured Free eBook of the Month selection, available directly from the publisher.

[Free eBook REPEAT] Code of Conduct by Kristine Smith [Science Fiction Thriller]

Code of Conduct by Kristine Smith, the 2001 recipient of the John W. Campbell Award for Best New Writer, is the 1st novel in her Jani Kilian Chronicles of far-future science fiction thrillers, free again for a limited time courtesy of the author herself via the backlist author re-publishing consortium Book View Café.

This was originally published in 1999 by Avon’s Eos imprint. The series contains space opera, MilSF, and political intrigue elements, and stars a disgraced former captain turned fugitive cyborg, The Six Million Dollar Man-style.

This installment has a touch of murder mystery in it, as a former lover who managed to track her down asks her to help him find his wife’s killer, and she must secretly return to the Commonwealth she once fled in order to do so.

Offered DRM-free worldwide, available directly from the publisher as well as via several other retailers.

[Free eBook] Starfarers by Vonda N. McIntyre [Science Fiction]

Starfarers by Vonda N. McIntyre, thrice winner of the Nebula Award, is the 1st novel in her Starfarers quartet of space exploration science fiction adventures, free for a limited time courtesy of the author via the Book View Café backlist author republishing consortium.

This was originally published in 1989 by Ace Books.

The series is set in a future where a newly-built starship is ready for its first journey of exploration, hoping to make alien contact. This story sees a group of scientists and adventurers come together to hijack the spaceship, when a new government orders the abandonment of the peaceful mission, instead intending to use the ship for waging war.

Offered DRM-free worldwide, apparently through the month of July, directly at the consortium’s webstore.

[Free eBook] Star Quest by Fenton Brockley [Science Fiction]

Star Quest by Fenton Brockley, a pseudonym for British author Donald S. Rowland, is his vintage science fiction space adventure with investigative mystery elements, free for a limited time courtesy of publisher Endeavour Press’ Venture imprint.

This was originally published in 1974 by Robert Hale.

The story involves a space mission to rescue an exploring starship gone unexpectedly incommunicado and disappeared, and a Lieutenant looking for his vanished crewmember brother, trying to find answers to a mystery which may be rooted in sabotage and misdeeds.

Offered worldwide, available at Amazon.

[Free eBook] Old Man’s War by John Scalzi [Military Science Fiction]

Old Man’s War by John Scalzi, is the 1st novel in his Old Man’s War series of military science fiction space operas, free for a limited time courtesy of publisher Tor Books.

This was a finalist for the 2006 Hugo for Best Novel and placed 2nd on the Locus Award list for Best First Novel. The series is set in a far future world at war with aliens, using assorted technology to physically enhance the humans within.

The story uses the premise that the military doesn’t want young people, but instead seasoned and skillful types who’ve lived a lifetime already, starring one man who takes the deal, finding the experience to not quite be what he expected.

Offered through June 21st, available in Canada & the US directly from the publisher as their Free Book of the Month Club selection.