The Biggest American Horror Story Mistakes You Never Noticed

"American Horror Story" has been a fan favorite since it first aired in 2011. The anthology series followed hot on the heels of Ryan Murphy and Brad Fulchuk's smash hit "Glee." However, "American Horror Story" is the polar opposite of the feel-good but angst-ridden teen-centric musical comedy — and that was apparent from the get-go of Season 1, "Murder House."

Murphy and Fulchuk retained the super-stylized, kitch, and camp aspects that made "Glee" a runaway success. But when it came to "American Horror Story," they took a decidedly darker turn. The show's faced controversy due to its gruesome and bloody subject matter. After Season 8, aka "Apocolypse," finished airing, Variety called for the series' end, insisting it had run its course: "This series has long been both overplotted and feebly structured, throwing tons of ideas into a season and letting them, eventually, wither." However, as per The Hollywood Reporter, FX announced it was renewing "American Horror Story" for another three seasons in January 2020. The 10th installment, "Double Feature," ran from August to October 2021 before reaching its (inevitably) gory climax (via Harpers Bazaar). Love it or hate it, the show must go on — for at least two more seasons, anyway. 

Sometimes, it's worth watching purely for the on-screen snafus that occur at a startlingly high rate, given the production value and budget. Often, though, blink and you'll miss them. So, grab the popcorn, as we're breaking down the biggest "American Horror Story" mistakes you never noticed.

The fictional depiction of the real-life serial killer, Richard Ramirez, appeared as a recurring character in "American Horror Story." As per Entertainment Weekly, Ramirez — nicknamed the "Nightstalker" by the media — was primarily played by Zach Villa following another actor's previous portrayal: Ramirez first appeared briefly in Season 5, "Hotel," but played a starring role in Season 9, "1984."

In "Hotel," Ramirez's ghost attends a "Devils Night" event at the Cortez. Ramirez sits around a table with other notorious serial killers, including Aileen Wuornos (Lily Rabe) and every kid's favorite clown, John Wayne Gacy (John Carroll Lynch). Ramirez pops up again in the first scene of "1984." The fictional Ramirez does what he did best in real life throughout the season — terrorize, assault, and murder (via Yahoo! Entertainment).

As The Sun reports, Ramirez eventually meets a grisly end in "American Horror Story" in 1989. He's then forced to endure a cycle of death and reincarnation, trapped in Camp Redwood for the next 30 years. This causes a significant plotline death date dilemma, however. The "Devils Night" scene in "Hotel" was set in 2015, and Ramirez announced he'd died two years earlier in 2013. So yeah, the math doesn't quite add up. And in case sadistic serial killers are your "thing," the real-life Ramirez was "convicted of 13 murders, five attempted murders, 11 sexual assaults, and 14 burglaries" in 1989. He was sentenced to death, but escaped execution after dying in a hospital in 2013 (via CNN).

Season 3 of "American Horror Story" was all about the supernatural, voodoo, and witchcraft. "'Coven' is a bubbling cauldron of lurid visuals, screaming rows, and high-camp horror," a review by the Independent reads. And they weren't kidding. The furious fights result in bloody endings right from the start — but then, just as quickly as the blood appears, it miraculously disappears.

In the first episode of "Coven," self-proclaimed "human voodoo doll" Queenie — played by the ever-awesome Gabourey Sidibe — uses her supernatural powers to hurt Emma Roberts' character, Madison Montgomery. Queenie violently stabs a fork into the top of her hand but transfers the resulting injury onto Montgomery. Following her screams of pain, a close-up shot of Montgomery's hand shows all the signs of being stabbed — with blood aplenty. However, by the time the camera pans back to Montgomery again, she's cradling her hand in pain, but there's not a wound to be seen, let alone even a drop of blood.

The disappearing blood blunders continue through to Season 10. In Episode 13 of "Double Feature," Danny Mott, played by Finn Wittrock, gets punched in the face following a heated argument with the "Freak Show" cast. Mott is knocked backward onto the floor, and a close-up shot of his face shows his left nostril covered in blood. However, by the time Mott manages to get back up onto his feet again, the blood has mysteriously evaporated, leaving not even a trace.

Season 6 of "American Horror Story," titled "Roanoke," left critics strictly divided. However, what matters most is the numbers. According to Variety, the "Roanoke" premiere was the "third most-watched episode in [the FX] franchise's history." An impressive 8.3 million viewers tuned in to watch — but, well, critics gonna critic, anyway. 

"It's just another crappy true crime story, but with a few Oscar nominees and a much larger budget," The Guardian sniped. Meanwhile, MTV News raved, "Between the tensions among the trio and the potential resurrection of the documentary presentation, consider us teased and tempted back into the haunted house." The outlet added that the anthology had gone "Full Blair Witch" in its latest installment. However, The Verge fell firmly into the detractors' camp. Claiming that the absence of the show's "pillar," Jessica Lange, left it "flailing," they noted that "Roanoke" called into question why "American Horror Story" was still running. What they failed to question, though, was why the cast's cellphones were still running, too.

Audrey Tindall, Lee Harris, and Monet Tumusiime's characters' phones were permanently in use during Episodes 7 and 8 — which, as IMDb points out, "would wear down the battery within a few hours, even without using other apps." They recorded, videoed, and used the phones as flashlights for days on end as they hunted for Sidney Aaron James (Cheyenne Jackson). Perhaps they'd stumbled upon that mythical tech unicorn — the never-draining battery — during their search. Because Sidney may have died, but their cellphones didn't, despite never being recharged.

One of the most controversial plotlines in "American Horror Story" history occurred in Season 1, "Murder House." It depicts a 1994 school shooting during Episode 6, "Piggy Piggy." Evan Peters' character, Tate Langdon, is the perpetrator, and he kills 15 victims before a SWAT team shoots him dead. In one disturbing scene, five students flee to the library to hide, but Langdon hunts them down, killing all the kids and the librarian. It's impossible to watch without thinking of the 1999 Columbine school massacre due to the similarities (via ResearchGate).

The storyline is eerily realistic, but once again, "American Horror Story" trips up on the details. According to IMDb, there's a copy of "The Children's Blizzard" amongst the library books, a staple of all school libraries ever since it was published in 2004 — 10 years after the scene was set.

There are also two timeline mess-ups in "Freak Show." One occurs in the Bette and Dot Tattler dream-nightmare scene. An Easymatic 300 x-ray machine is wheeled into the room as the surgeon prepares to separate them. X-ray equipment was invented in 1896 (via Wired), but Easymatic didn't start distribution until 1979, as per BRH Bulletin, and the show's set in 1952. The other error involves the bright overhead lighting that's used to illuminate the performance stage. According to IMDb, the lighting fixtures are ETC's Source Four LDIs. However, the company didn't launch that brand of fixtures until 1992 (via City Theatrical).

It's fair to say "Hotel" — aka Season 5 of "American Horror Story" — is far from a documentary. Bloodthirsty, murderous vampires, and serial killer ghosts are all fictional, hopefully. The lack of realism is what makes for great horror, right? That aside, on a show as huge as "American Horror Story," you'd at least expect the scripting to be solid — and not riddled with errors.

However, the mistakes kept on coming. During Episode 2 of "Hotel," fashion mogul Will Drake, played by Cheyenne Jackson, decides to throw a party to celebrate becoming the new owner of the Cortez — hello, Naomi Campbell! In the hospitality business, anybody worth their salt has a knack for remembering customers' names; but Drake manages to recall names he's never been told before.

In one scene, Drake introduces himself to John Lowe (Wes Bentley) when the detective asks for his room key, and Lowe explains he's waiting for his daughter. When the little girl arrives, she's overwhelmed by the hotel's opulence, and she's super excited to learn there's a party happening. She begs her dad to let them go, but Lowe tells her it's only for grown-ups. However, Drake quickly intervenes and insists she can sit with his young son. Drake introduces her, "Lachlan, this is Scarlett," he says, despite having just met Lowe and having never met his daughter before or been told her name.

Other regular "American Horror Story" mistakes involve medical mishaps and mysteries, which is probably inevitable given the anthology's alarming number of surgeries and murders. You'd think that Ryan Murphy would know his way around an operating theater, given the fact he created the aughties plastic surgery drama "Nip/Tuck."

But in the premiere episode of Season 2, "Asylum," super creepy Dr. Arthur Arden, played by James Cromwell, straps Evan Peters' character, Kit Walker, to a table in a dank cell. After explaining that "the devil doesn't reside in hell," Arden points to the front top part of Walkers' head and says "he lives here" in the "occipital lobes." Then he slices Walker's skull open — without anesthetic, no less. However, the occipital lobe (singular) is located at the back bottom of the brain (via MedicalNewsToday).

In Episode 3 of Season 8, "Apocalypse," Ms. Venables (played by frequent Ryan Murphy collaborator Sarah Paulson) and Ms. Mead (played by Kathy Bates) hatch a plan to murder the other survivors hunkered down in the nuclear bunker. They agree to "poison" everybody by giving them apples injected with snake venom to eat. But according to WhatIfShow, venom and poison aren't the same things. Humans don't die from ingesting venom; it doesn't react in the same way as poison. Venom needs to be injected directly under the skin and enter the bloodstream to prove fatal (except for people suffering from stomach ulcers).

Elsa Mars' prosthetic legs take "American Horror Story" mistakes to a whole new bizarre level. Mars, played by Jessica Lange, is a double amputee who manages the cast of "Freak Show," and the story of how she lost her legs remained a mystery until Season 4, Episode 4.

During a series of stylized black-and-white flashbacks, Mars explains she worked as a dominatrix during the "deviant" and "dark" days of 1932 Berlin. She talks about how she developed a rep for being "creative" and boasts, "Nobody puts on a show better than I do." However, Mars' show abruptly ended after she was drugged and chained to a bed by a roving gang of snuff moviemakers. While the camera rolled, stocking-masked sadists chopped her legs off with a chainsaw.

Well, Elsa Mars had finally answered that question. But the mystery surrounding her ever-changing legs remained. Mars had wooden prosthetics, the only option available during the 1950s (via Business Insider) — when "Freak Show" was set. Given that they were hollow wood with some leather straps and buckles, it was pretty apparent when somebody had prosthetics. However, Mars would shift from stunted walking to dancing like a prima Bolshoi ballerina in the blink of an eye. By the time the season finale rolled around, there wasn't even a hint of prosthetics anymore. Mars is wearing a knee-length skirt in one scene, and when she falls to the floor, it's crystal clear that her legs were all flesh and blood.