[[caption-width-right:183:Cover art of a recent omnibus edition, by Andrew Hou]]
-> ''"Man has conquered space before, you may be sure of that."''

A series of science fiction stories written by Creator/CLMoore. Published in the famous pulp magazine ''Magazine/WeirdTales'' between 1934 and 1939, the series consists of 12 novellas and one vignette. The series is notable for its rich style and emotional descriptions, something highly unusual in pulps at the time. The stories sit somewhere between classic pulp adventure, ambiguous fantasy elements, and a strong dose of Lovecraftian horror. Northwest Smith is a known smuggler and criminal in the spaceways of the solar system. He is most often broke throughout and will work for just about anyone provided they pay well. This is all just the background of the series however, as most of the stories detail NW's encounters with the strange creatures that remain from the solar system's ancient times. Which as it turns out, are quite a lot more numerous than you might think. He is often accompanied by his sinister Venusian partner, Yarol.

[[folder:The stories]]
* "Shambleau"
* "Black Thirst"
* "Scarlet Dream"
* "Dust of Gods"
* "Julhi"
* "The Cold Gray God"
* "Nymph of Darkness - Written with ForrestJAckerman
* "Yvala"
* "Lost Paradise"
* "The Tree of Life"
* "Quest of the Starstone" - A {{Crossover}} story with her other famous character Literature/JirelOfJoiry, co-written with her husband Creator/HenryKuttner.
* "Werewoman"
* "Song in a Minor Key"

!! Tropes featured:

* AllJustADream: Song in a Minor Key seems to be this as Smith dreams about his past, though it's never quite made clear how much was real.
* AncientAstronauts: A variation. It is implied that a prehistoric human civilization mastered spaceflight and brought back tales of the creatures they encountered on other worlds, inspiring later legends.
* CatGirl: The titular Shambleau is one of these crossed with a Medusa.
* {{Crossover}}: With Moore's fantasy character Literature/JirelOfJoiry. This is not as mad as it sounds - both characters often end up in strange realms facing powerful, mysterious creatures and the word "magic" even pops up a few times in the Northwest Smith stories.
* DecoyDamsel: The eponymous Shambleau from the first story.
* DepravedBisexual: The BigBad of Black Thirst fed on the beauty of women and later tries to devour Smith as well, finding him beautiful in his own way.
* EldritchAbomination: Usually in disguise.
* HalfHumanHybrid: The titular character in "Nymph of Darkness."
* HornyDevils: Or the nearest alien equivalent, particularly Shambleau.
* IGaveMyWord: Yarol asks Smith for a promise in "Shambleau", because he knows that Smith's given word is inviolate.
* InterspeciesRomance: For a sufficiently inclusive definition of "romance."
* MarsNeedsWomen: Sometimes Mars needs women, sometimes Smith needs Venusians, and sometimes Mars or Venus needs Smith.
* MysteriousPast: For a never explained reason, Smith was exiled from Earth. All we know was there was a girl, a fight with the authorities, and a burnt down house.
* RayGun: Northwest Smith carries one around.
* SensitiveGuyAndManlyMan: Smith and Yarol the Venusian provide an interesting variation on the trope. While Smith is a rugged, muscular space cowboy and Yarol is a delicate-looking young man who resembles a choirboy, the former occasionally displays flashes of sensitivity whereas the latter doesn't possess a shred of kindness or decency.
* SesquipedalianSmith: ''Northwest'' Smith.
* StarfishAlien: In "Shambleau" the "cat girl" form is shown to be how the creature interacts with others, when it feeds it reverts to its true form of a tentacled mass.
* VenusIsWet: Venus is depicted as dark and swampy.