Ancient Alien Mystery sci-fi books

Spin

The Oracle (First Contact)

Isles of the Emberdark: A Cosmere Novel (Secret Projects)

Tomb World: Warhammer 40,000

Sublimia Syndrome

Navigators of Dune: Book Three of the Schools of Dune Trilogy

Fractured Empire - Complete Cadicle Series (Books 1-7): An Epic Space Opera Saga (Cadicle Universe)

Hammerfall

NEOGENESIS: A SciFi Adventure

Extinction Series: The Complete Collection

2001: A Space Odyssey

Foundation and Earth

The Object: Hard Science Fiction

Abducted By Humans

Weight of Victory

Ship of Prophecy Box Set: The Complete 10-Book Series

Accidental Astronaut 3

Black Swan 1: A First Contact Science Fiction Thriller (Black Swan Event)

Hyperion

Revelation Space (Volume 1) (The Inhibitor Trilogy, 1)

Scars of Rebellion

Loop Bound: A New Reflection

Old Colony

Dawn of Mankind

Parallax: A Sci-Fi Thriller

Abaddon's Gate

Leviathan Falls

The Glass: The Complete Series: The Glass, Books 1-3

AS1

Echoes of Time: A Science-Fiction Thriller