History Series / IKnowWhatYouDidLastSummer2021

The first four episodes of the series premiered on [[Creator/PrimeVideo Amazon Prime Video]] on October 15, 2021, with the rest then airing on a weekly basis until November 12. On January 7, 2022, it was announced that the series had been cancelled [[ShortRunner after just one season]].

''I Know What You Did Last Summer'' was a [[ShortRunners short-lived]] American [[{{Horror}} Teen Horror]] television series based on the [[Literature/IKnowWhatYouDidLastSummer 1973 novel of the same name]] by Creator/LoisDuncan. Creator/AmazonStudios announced the series' development in 2019, with [[https://en.wikipedia.org/wiki/Neal_H._Moritz Neal H. Moritz]] and Creator/JamesWan serving as executive producers. It was given a straight-to-series order in October 2020. Filming took place in Oahu and began in January 2021.

It premiered on Amazon Prime Video on October 15, 2021, with the first four episodes and the rest debuting on a weekly basis. On January 7, 2022, it was announced that the series had been cancelled after just one season.

** Margot references the film ''Film/Scream1996''. Her actress, Brianne Tju, was a cast member in that film’s [[Series/ScreamTVSeries spin-off series.]]

* ADateWithRosiePalms: In "If Only Dogs Could Talk" Margot masturbates while watching the video of Lennon and Dylan having sex.

* HasTwoMommies: Dylan has two mothers, who seem like classic HippieParents.

* GayGuyDiesFirst: [[spoiler: Johnny is the first of the five to die, and Lennon is the victim of the hit and run. Both characters are bisexual and [[DeathBySex fairly sexually active]].]]

* ReallyGetsAround: Lennon and Johnny, [[spoiler: [[DeathBySex who are incidentally the first of the core group to die]]]], were both quite promiscuous (with the former even making amateur porn videos as well for her Only Fans account).

* DeathBySex: [[spoiler: Lennon has sex with Dylan, which causes an argument with her sister and leads to Lennon leaving the party afterwards. She is then struck and seemingly killed by the group’s car. Johnny, mentioned to have had an active sex life, is also the first of the group to go.]]

* HomePornMovie: It turns out Lennon made many home porn videos featuring her having sex with different guys (and Margot once as well) which she uploaded onto her Only Fans account, which she'd made money from.

* DepravedBisexual: [[spoiler:Margot is revealed to be the killer,a vicious, manipulative young woman who's motivated partly by twisted love for Lennon, her dead female friend (whom she once had sex with) and revenge on Johnny, her ex-boyfriend, because he left her. It's {{downplayed}} however as Lennon, Allison and Johnny are also bisexuals but they don't display these traits.]]

* TwinSwitch: [[spoiler: Alison accidentally takes her sister Lennon’s identity the night of the accident after the two had a major fight, when Alison takes Lennon’s jacket and Lennon Alison’s necklace. Then the group accidentally runs over the actual Lennon as she’s walking home and they mistake for Alison, who doesn’t reveal the switch. This later becomes an InvokedTrope when Alison informs their dad Bruce of the accident as Bruce, devastated at losing one daughter, doesn’t want his other daughter to go to prison.]]

* WeUsedToBeFriends: The strain of the secret between them caused the friends to become estrange, brought together a year later when someone starts taunting them about it.

* AdultsAreUseless: The party in the first episode is sanctioned by the parents, who justify it by saying that they'd rather have their kids drink in a situation where they can be in control instead of going to do it some place unsupervised. However, there are multiple scenes making it clear that they aren't adequately chaperoning. One of the first shots of the party shows a someone who is presumably a teenager naked from the waist down peeing in a pool. The party doesn't just have underage drinking, but hard drugs and sex as well.

* AmicableExes: Margot and Johnny are close despite their prior relationship history. Margot even encourages Johnny's new relationship [[spoiler: and is the one hit hardest by his killing.]]
** [[spoiler: [[SubvertedTrope Subverted]] in the season finale as it's revealed that Margot killed him and his boyfriend because he had dumped her for him.]]

* PoliceAreUseless: Played with. Lyla herself seems competent for the most part, though when [[spoiler: Courtney tries to get her to search for her missing daughter]], she's dismissive of her concerns by stating that the killer had only targeted men up to that point; this dismissal indirectly [[spoiler: leads to Courtney's death when she tries to look for Riley on her own]]. Additionally, Lyla's deputy Doug seems like a {{Cloudcuckoolander}} initially but proves himself to be SmarterThanTheyLook by realizing that Kelly Craft is likely not the murderer through researching through various files, though [[spoiler: is killed off in the same episode]].

* {{Profiling}}: When a deputy arrives at a trailer park to interview a potential suspect, he asks Riley to show her identity despite her mentioning that she lived there. Her mother Courtney quickly starts filming this when she comes outside.

* ReallyGetsAround: Lennon and Johnny, [[spoiler: [[DeathBySex who are incidentally the first of the core group to die]].]]

* DepravedBisexual: [[spoiler: Margot is revealed to be the killer]].

* MsFanservice: Lennon and Margot are uninhibited with their sexuality and provide many instances of fanservice for the show.

!!This series contains examples of:

''I Know What You Did Last Summer'' is an American [[{{Horror}} Teen Horror]] television series based on the [[Literature/IKnowWhatYouDidLastSummer 1973 novel of the same name]] by Creator/LoisDuncan. Creator/AmazonStudios announced the series' development in 2019, with [[https://en.wikipedia.org/wiki/Neal_H._Moritz Neal H. Moritz]] and Creator/JamesWan serving as executive producers. It was given a straight-to-series order in October 2020. Filming took place in Oahu and began in January 2021.

It premiered on Amazon Prime Video on October 15, 2021, with the first four episodes and the rest debuting on a weekly basis.

* [[spoiler: DownerEnding: Margot is revealed as the killer, and has pinned most of her crimes on Dylan, but Alison could exonerate him by revealing that Margot was the one who stabbed her and not him. [[DirtyCoward She lies in order to hide her]] DeadPersonImpersonation and Dylan goes to jail for Margot's crimes while the two women get off scot free.]]

* TheUnfavorite: Both twins view themselves as this.

* BuryYourGays: The second episode has a two-fer. [[spoiler: The bisexual Johnny is the first of the group to die, moments after his fiancé Coach Eric Craft is also murdered. Additionally, the actual Lennon is revealed to have had a sexual encounter with Margot - and is the one the kids ran over in this adaptation of the story.]]