The Questioner Trilogy: Similar series
The X-Files
by Charles L. Grant
3.52 · 158 ratings
fiction · mystery · audiobook · sci-fi · horror · adult · suspense · paranormal · book · conspiracies · political-intrigue · urban-fantasy · space-opera · crime · action-adventure · supernatural · epic · law-enforcement · aliens · terror
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Saga of the Pliocene Exile
by Julian May
4.17 · 98 ratings
fiction · adult · female-author · sci-fi · space-opera · time-travel · paranormal · action-adventure · alternate-history · historical · historical-fiction · 20th-century · epic · book · anthologies · space · aliens · invasion · dystopia · myths
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Cities in Flight
by James Blish
3.82 · 74 ratings
space · sci-fi · space-opera · fiction · audiobook · historical · adult · 20th-century · literary · classics · book · colonization · dystopia · box-set · immortality · pulp · action-adventure · orphans · young-adult · exploration
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Their Champion
by K.A. Knight
4.27 · 88 ratings
fiction · adult · post-apocalyptic · romance · reverse-harem · book · dystopia · futuristic · apocalyptic · dark · sci-fi · assassins · polyamory · abuse · political-intrigue · contemporary · audiobook · alpha-mc · female-mc · steamy
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Ruins of the Earth
by Christopher Hopper
4.37 · 41 ratings
book · military · adult · space · violent-conflict · soldiers · sci-fi · galactic-empire · colonization · aliens · fiction · invasion · first-contact · audiobook · action-adventure · dystopia · supernatural · urban-fantasy · war · apocalyptic
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Doctor Who by Douglas Adams
by Gareth Roberts
4.06 · 48 ratings
action-adventure · humor · aliens · fiction · comedy · sci-fi · time-travel · audiobook · historical · adult · book · 21st-century · steampunk · crime · industrial-era · mystery · robots · 20th-century · space-opera · satire
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Sarafin Warriors
by S.E. Smith
4.13 · 46 ratings
romance · paranormal · fiction · adult · book · steamy · shapeshifters · audiobook · contemporary · space · humor · aliens · warriors · fated-mates · sci-fi · urban-fantasy · alpha-mc · suspense · dragons · dark
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Ruins of the Galaxy
by J.N. Chaney
4.33 · 41 ratings
military · audiobook · first-contact · space · violent-conflict · soldiers · sci-fi · space-opera · galactic-empire · colonization · aliens · fiction · invasion · book · war · action-adventure · adult · young-adult · death · corruption
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Excalibur
by Peter David
3.90 · 30 ratings
action-adventure · aliens · fiction · invasion · book · military · space · genetic-engineering · adult · violent-conflict · sci-fi · space-opera · audiobook · first-contact
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Invasion Trilogy
by W.J. Lundy
4.15 · 28 ratings
book · apocalyptic · first-contact · horror · invasion · monsters · war · post-apocalyptic · action-adventure · fiction · aliens · colonization · galactic-empire · soldiers · sci-fi · zombies · adult · dystopia · military · medical
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The Valespian Pact
by Lexi Ander
4.09 · 33 ratings
lgbtq · aliens · fiction · sci-fi · adult · romance · book · mlm · action-adventure · polyamory · royalty · paranormal · family · war · mystery · space-opera · military · violent-conflict · steamy · shapeshifters
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Iriduan Universe Love Stories
by Susan Trombley
4.21 · 24 ratings
book · adult · sci-fi · aliens · fiction · humor · monsters · paranormal · romance · fated-mates · multi-pov · space · alpha-mc · shapeshifters · steamy · kidnapping · magic · grumpy-mc · violent-conflict · holidays
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Brides of Taar-Breck
by Sassa Daniels
4.09 · 23 ratings
book · steamy · romance · fiction · action-adventure · paranormal · sci-fi · adult · aliens · alpha-mc · reverse-harem · kidnapping · futuristic · fantasy · humor · supernatural · soldiers · dark · in-uniform
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Grimm's War
by Jeffery H. Haskell
4.52 · 27 ratings
space-travel · soldiers · violent-conflict · adult · space-fleet · military · first-contact · book · action-adventure · fiction · space-opera · exploration · galactic-empire · sci-fi · space · hard-sci-fi · invasion · aliens · colonization · audiobook
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Zyrgin Warriors
by Marie Dry
3.87 · 31 ratings
book · romance · futuristic · aliens · fiction · sci-fi · adult · paranormal · steamy · dystopia · post-apocalyptic · alpha-mc · anti-hero · humor · female-mc · kidnapping · kind-mc · abuse · enemies-to-lovers · audiobook
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The Burn Cycle
by Tim Akers
3.60 · 15 ratings
fiction · sci-fi · historical · steampunk · industrial-era · epic · adult · book · urban-fantasy · action-adventure · mystery · dark · audiobook · horror · anthologies · hard-boiled · urban · young-adult
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The Translocator
by M.G. Herron
4.00 · 11 ratings
aliens · exploration · fiction · space-travel · invasion · adult · space · first-contact · sci-fi · book · violent-conflict · space-opera · colonization · action-adventure · litrpg · audiobook
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Tankbread
by Paul Mannering
3.80 · 10 ratings
horror · monsters · adult · dystopia · fiction · zombies · book · apocalyptic · action-adventure · post-apocalyptic · sci-fi · survival · genetic-engineering
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Infinite Unions: Intrepid Alien Mates
by Trish Heinrich
4.50 · 12 ratings
sci-fi · adult · fiction · aliens · action-adventure · book · romance · political-intrigue · multi-pov · space-opera · military · fated-mates · enemies-to-lovers · fake-relationship · paranormal · space · friends-to-lovers · disability · mental-illness · space-travel
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His Majesty's New World
by Kenneth Tam
4.00 · 17 ratings
book · fiction · alternate-history · violent-conflict · adult · military · war · aliens · sci-fi · action-adventure · historical · space-opera · 20th-century · dieselpunk · steampunk · industrial-era · western · fantasy · nautical · historical-fiction
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The Collapse
by Penelope Wright
4.13 · 8 ratings
action-adventure · post-apocalyptic · sci-fi · time-travel · apocalyptic · book · dystopia · fiction · adult · paranormal · young-adult · urban-fantasy
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Gan Moondark
by Donald E. McQuinn
3.86 · 7 ratings
apocalyptic · post-apocalyptic · adult · action-adventure · book · fiction · sci-fi · magical-realism · coming-of-age · alternate-history · supernatural
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The Fighter Queen Saga
by John Bowers
4.00 · 7 ratings
book · military · space-opera · hard-sci-fi · sci-fi · violent-conflict · adult · fiction · colonization · fighter
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Jane Poole Genesis
by Michael Penmore
4.00 · 5 ratings
space-opera · space-travel · soldiers · sci-fi · adult · space · violent-conflict · military · book · exploration · fiction · ai · action-adventure · colonization · female-mc · space-fleet · alpha-mc · amnesia
All books in this series ❯