History Series / FortyFourHundred

* HollywoodAutism: It is indicated that Hayden has an autism spectrum disorder, though it hasn't been stated. From his flashback episode in the 1930s, he was having issues looking at people in their eyes, socializing, and eating foods with certain textures. It's also stated he was placed in a sanitarium for his condition. In the present, he's withdrawn and shy and hyperfixated on saving Mildred from the hospital she was taken to. Though this somewhat downplayed as his condition is portrayed somewhat realistically, especially for the time period Hayden came from.

* AdaptationalDiversity: In the original, the main cast was white and straight aside from one [[TokenMinority token]] black guy, with one mixed-race character and another one joining later. In this version, not only are almost all of the main characters black but the majority of the returnees are also non-white and one of the main characters is a lesbian, while another is a trans man. Of the white characters, Noah is a trans boy and Mildred has a malformed left hand. Two more minor women of color in the cast are lesbians too. It also turns out that Isaiah's son is gay. Hayden is Black and also implied to have autism.

* BittersweetEnding: In season 1; [[spoiler:the 4400 were able to avoid major casualties in the standoff between them and the 44forum white supremacists, and the tide is slowing turning in their favor in regards to public opinion. But Logan was nearly killed during the riots and whisked away by a green light, along with Hayden. Andre and Shanice decide to end their brief romance, with Andre starting to work with Dr. Sienna Stone of BHN who can't be trusted with the wellbeing of the 4400. Mildred isn't able to reach Millicent and Millicent takes off, with her future unknown. And there are so many other questions, such as Reverend Isaiah's whereabouts, time-traveling and just how Manny was able to come back from being shot and whisked away by a green light with no memory of what happened to him.]]

* FantasticRacism: Mixed with real life bigotry, as most of the 4400 are from a marginalized group and are feared and hated for coming back with powers.

** The returnees all hail from different time periods - Shanice is from 2005, Claudette is from 1958, Doc is from the Harlem Renaissance, Mildred is from 1972, Rev is from the 90's, and [=LaDonna=] is from 2015. As a result, all of them have difficulty with how much has changed since.

* CoolOldLady: Ms. Grover, Shanice's HonoraryAunt. She helped raise Shanice growing up, completely believes her when she hears her story, then bluntly tells her she's in no fit state to look for her family and puts her to bed. When she hears that she's hosting Claudette, an activist from the 50s, she pulls out all her scrapbooks so that Claudette can see all the progress the Civil Rights movement has made.

* AdaptationalDiversity: In the original, the main cast was white and straight aside from one [[TokenMinority token]] black guy, with one mixed race character and one AmbiguouslyBrown one joining later. In this version, not only are almost all of the main characters black but the majority of the returnees are also non-white and one of the main characters is a lesbian, while another is a trans man. Of the white characters, Noah is a trans boy and Mildred has a malformed left hand. Two more minor women of color in the cast are lesbians too. It also turns out that Isaiah's son is gay. Hayden is Black and also implied to have autism.

* AmbiguousDisorder: It is indicated that Hayden has an autism spectrum disorder, though it hasn't been stated. From his flashback episode in the 1930s, he was having issues looking at people in their eyes, socializing, and eating foods with certain textures. It's also stated he was placed in a sanitarium for his condition. In the present, he's withdrawn and shy and hyperfixated on saving Mildred from the hospital she was taken to.

In May 2022, the series was cancelled by the CW after it's first and only season.

** The final scene of the series finale has [[spoiler: Jharrel and Claudette shocked when Manny walks into the apartment...only his words indicate he has no idea who Claudette is and seems to not even remember anything that's happened since his abduction]].

** The final scene of the first season finale has [[spoiler: Jharrel and Claudette shocked when Manny walks into the apartment...only his words indicate he has no idea who Claudette is and seems to not even remember anything that's happened since his abduction]].

* WhatYearAsThis: When Shanice learns that Ruth Bader Ginsburg has died and the others around her give conflicting accounts, she slowly puts it together and asks the guard what year it is. He answers, confirming to the returnees that they've time traveled.

* BittersweetEnding: To season 1; [[spoiler:the 4400 were able to avoid major casualties in the standoff between them and the 44forum white supremacists, and the tide is slowing turning in their favor in regards to public opinion. But Logan was nearly killed during the riots and whisked away by a green light, along with Hayden. Andre is working with Dr. Sienna Stone of BHN, who can't be trusted with the wellbeing of the 4400. Mildred isn't able to reach Millicent and Millicent takes off, with her future unknown. And there are so many other questions, such as Reverend Isaiah's whereabouts, time-traveling and just how Manny was able to come back from being shot and whisked away by a green light with no memory of what happened to him.]]

* BluffTheMurderer: A variation as Jharrel is confronted by Keisha, who has a bag claiming it has [[spoiler: the evidence that Manny stabbed Rev. She emphasizes that once she shows it to the feds, they can use their tech to catch Manny. Manny turns himself visible to demand what's in the bag...at which point Jharrel handcuffs him while Keisha reveals she had a copy of ''A Wrinkle in Time''. Too late, Manny realizes the pair set him up for a capture.]]