History Series / AmericanHorrorStoryDoubleFeature

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* FaceFullOfAlienWingWong: The aliens in this setting have only one goal coming to Earth: creating the perfect human-alien hybrid. To do so they need to regularly abduct humans to make them fall pregnant (and the biological sex of the host [[MisterSeahorse does not matter]]). The pregnancy is very much like a human one (morning sicknesses, strange food cravings, painful chest), however it is [[ExpressDelivery abnormally fast]] (the protagonists of the modern days section looking several months pregnant after a few days or weeks). While the female hosts can deliver the baby through the natural process of birth, male hosts need to have the baby [[GuttedLikeAFish surgically removed]]. And not only is the birthing delivery quite painful, it is also very dangerous for the life of the host. Let's say there's a reason why the aliens need at least five hundred test-subjects PER YEAR.

* MrSeahorse: At the end of the first episode, Troy and Cal discover that they are both just as inexplicably pregnant as their female friends Jamie and Kendall. As it turns out, the aliens do not care for the biological sex of the ones they abduct when it comes to create hybrid babies. Male abductees share most of the symptoms of a female pregnancy (painful chest, morning sickness, strange cravings...), but when it comes to birthing the baby, while the female abductees do so by natural means, the doctors are forced to [[spoiler: cut the men's belly open]] to remove the baby. It is implied that if they do not do so... [[ChestBurster "Life finds its way..."]].

* ReptilianConspiracy: The finale reveals that a reptilian species is also seeking to colonize Earth in rivalry with the other aliens. [[spoiler: Except not -- the two species are planning to cohabit the planet after eliminating humanity.]]

* WouldBeRudeToSayGenocide: [[spoiler: After the perfect hybrid is born, the aliens don't even hide the fact that they intend to kill every living human, but dress it up in a lot of coldly delivered, holier-than-thou declarations of humanity's worthlessness and evilness.]]

* ArtisticLicenseBiology: Men can in fact test positive on pregnancy tests. It means they have cancer.

Part two, ''Death Valley'', involves aliens —previously alluded to in ''[[Series/AmericanHorrorStoryAsylum Asylum]]''— and follows characters in two eras: UsefulNotes/DwightDEisenhower (Creator/NealMcDonough) discovering the existence of extraterrestrial life in UsefulNotes/TheFifties, and four college students (Creator/KaiaGerber, Creator/NicoGreetham, Creator/RachelHilson, Creator/IsaacColePowell) who experience an alien encounter [[MeanwhileInTheFuture in the present day]]. The aforementioned Paulson, Rabe, Ross, and Grossman also appear, as well as Creator/CodyFern and Rebecca Dayan.

* DeathOfAChild: Played straight, with the babies TB Karen delivers to Belle to feed her cravings. [[spoiler:Ultimately PlayedStraight with Eli, who is one of the few characters to survive the season.]]

* RomanticTwoGirlFriendship: Kendall and Jamie spend much of their camping trip cuddled up in each other's arms.

* InfantImmortality: {{Averted}} ''hard'' with the babies TB Karen delivers to Belle to feed her cravings. [[spoiler:Ultimately PlayedStraight with Eli, who is one of the few characters to survive the season.]]

* BaldWoman: Any female Pale One [[spoiler: ultimately including Doris]].

* AnAesop: A cruel but necessary one. Some people have no talent and if they chase their dreams it can lead to great pain and suffering.

** The seaside TownWithADarkSecret where the locals make a DealWithTheDevil for profit that turns some of them into {{Humanoid Abomination}}s also brings to mind ''Literature/TheShadowOverInnsmouth''.

Part two, ''Death Valley'', involves aliens —previously alluded to in ''[[Series/AmericanHorrorStoryAsylum Asylum]]''— and follows characters in two eras: UsefulNotes/DwightDEisenhower (Creator/NealMcDonough) discovering the existence of extraterrestrial life in UsefulNotes/TheFifties, and four college students (Kaia Gerber, Nico Greetham, Rachel Hilson, Isaac Cole Powell) who experience an alien encounter [[MeanwhileInTheFuture in the present day]]. The aforementioned Paulson, Rabe, Ross, and Grossman also appear, as well as Creator/CodyFern and Rebecca Dayan.

* YouCannotGraspTheTrueForm: Valiant Thor says that this is why the aliens never appear to humanity in their actual forms.

* TheGreys: The aliens first seem to fit the picture to a T, being grey, thin and bald beings with no nose, long fingers and big black eyes... However in the first episode, an alien autopsy reveals their body is entirely empty, as if it was a shell, and inside is a tentacled blob-like FaceHugger. Given that tentacles are seen during the modern days protagonists's abduction, and that alien-human hybrid babies often have tentacles and FaceHugger tendencies, it seems their true shape is the one of an OctopoidAliens.

* DownerEnding: [[spoiler: Alma kills Harry so that he won't make her stop taking the Muse, then moves to Los Angeles with Ursula and the Chemist, who spread the pills across the city and cause it to fall into chaos as countless people turn into Pale Ones.]]

* DownerEnding: [[spoiler: All the sympathetic human characters are killed by the aliens, who stop all attempts to avert their plan to commit genocide thwarted with little effort.]]