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      I Know What You Did Last Summer (2021)

      Season 1

      I Know What You Did Last Summer

      45 Reviews 100+ Ratings

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      Critics Consensus

      A bloodless slasher that fails to congeal, I Know What You Did Last Summer hacks at its killer cast with plot holes and unsatisfying twists. Read critic reviews

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      Episodes

      • 1. It's Thursday

        Air date: Oct 15, 2021

        Lennon Grant returns home after her first year at college and discovers that someone knows the terrible secret she and her friends swore to keep last summer.

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      • 2. It's Not Just For Dog S...

        Air date: Oct 15, 2021

        The estranged friends reunite to try and figure who might have revealed their secret or who else knows what they did.

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      • 3. A Gorilla Head Will Not Do

        Air date: Oct 15, 2021

        Unable to go to the authorities without revealing their secret, the crew needs to solve the mystery on their own; more bodies turn up as they realize they're being haunted and hunted.

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      • 4. Hot Shrimp Salad

        Air date: Oct 15, 2021

        Lennon uncovers secrets about her twin and begins to fear the worst about the true identity of the person murdering her friends; more murders shock the local community.

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      • 5. Mukbang

        Air date: Oct 22, 2021

        The police question everyone in town with any connection to the victims; the crew thinks they know who is after them and hunts for evidence implicating the town eccentric.

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      • 6. Least You Had a Spare

        Air date: Oct 29, 2021

        Lennon unearths more devastating truths as the crew frantically searches for one of their own who has gone missing.

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      • 7. If Only Dogs Could Talk

        Air date: Nov 5, 2021

        With the Kani Kani festival around the corner, the police apparently solve the mystery and peace returns to Wai Huna. However, the calm is shattered when the killer strikes again.

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      • Lennon and her surviving friends confront painful truths from the past as the shocking truth of the killer's identity is finally revealed, with deadly consequences.

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      I Know What You Did Last Summer: Season 1 Videos

      Tv Season Info

      Cast & Crew

      Madison Iseman
      Brianne Tju
      Ashley Moore
      Fiona Rene
      Cassie Beck
      Brooke Bloom
      Bill Heck
      Sara Goodman
      Shay Hatten
      Neal H. Moritz
      Pavun Shetty
      Erik Feig
      James Wan
      Michael Clear
      Rob Hackett

      News & Interviews forI Know What You Did Last Summer

      Critic Reviews for I Know What You Did Last Summer: Season 1

      Audience Reviews for I Know What You Did Last Summer: Season 1

      • Feb 06, 2023
        Wanted to watch this because I liked the original back in the day, but this was utterly far-fetched. Acting was mediocre at best, but that's usually okay in horrors and thrillers. However, seems like the writers ran out of ideas and the killer ended up being a ridiculous choice. Kind of like Dan ended up being gossip girl in the end. Or those essays where at the end you wake up and it was all a dream. A lot of 'low-key' and 'high-key' jargon thrown in to make it relatable to the current era, but sheesh, no one can tell the twins apart? I know many identical twins, and when you are good friends, you can defs tell them apart. Other than how bad I think this was, it was still fun in a light-hearted way with enough gore to make it almost comedy-like.
      • Sep 14, 2022
        After watching the full season i can honestly say it was a waste of time. Sure the signs for stupid writing were there all along. I just chose to believe the writers had a brain - but boy when the finale came it was the Stupidest twist ive ever watched on TV.
      • May 09, 2022
        It's unoriginal and features unlikable characters. The plot is stupid, unbelievable and boring. It's also unnecessary vulgar abd trying to hard to be relevant and cool. I gave it 2 and a half episodes before I shut it off.
      • Mar 28, 2022
        Well, the series is certainly anything but a horror series, let alone a slasher series. But, let's face it, the main movie wasn't really a slasher movie either. Maybe a soft slasher... ;) It's a good, exciting series. Although, I would categorize the series more as a drama/thriller.
      • Mar 24, 2022
        Honestly pretty disappointed in this Amazon reboot. As a slasher fan this was just awful. The story gets hard to follow at some points and with little to no classic slasher jump scares... it was a slow experience. Do yourself a favor and skip this one.
      • Feb 16, 2022
        Surprisingly the actors are probably the only thing that kept me wanting to watch the show. It's sad that the show had so much potential and it was ruined by horrible writing. It would have been better if they had kept the story short and quick but they dragged it out and made half the show not even make sense. I was so excited to watch the show but was very disappointed, not by the actors but by the writing team. I feel bad for the actors, they did what they could with what they had. It's a repeating thing with all of the Amazon Prime Original shows I have seen. They have been poorly written and not taking the time for. Just look at Amazon Prime original Panic, it was a good plot but ruined by the people who didn't care to take their time on the show. I believe Amazon Prime will not stop doing this, I think it's just easier for them to make a show barelly put effort in it, then cancel it, and go on to the next show. It's more messed up that this was supposed to be a reboot of the originale films to. I get that people think the ending is very unique but in all reality it's pretty crappy. She's going to put one psychopath in jail and not the other. At least Dylan didn't kill people he only was trying to get in the cult stuff which I do think is equally as bad but not as far as killing people. How would I be surprised though the main girl is messed up her self to. The ending ending were we can see that Dylan has the cult bible in prison and Riley still alive? It was a great start for the next season but with all the bad writing and just not good scripting, Im happy theres not a season 2. Because I know it would disappoint me more to see great potential put to waist.
      • Jan 17, 2022
        Ya know how there are some movies out there that are terrible, but for some reason you want to finish them to see what happens? And meanwhile you are thinking to yourself that you aren't very wise with your time? But you keep watching anyways? It's like that, but stretched into like a 9 hour season.
      • Jan 15, 2022
        I'm a long time horror fan who loved the movies so I was excited that it was turned into a tv series. I'm no prude and expected sex and violence and swearing. But I did not expect it to be so vulgar. No I'm not referencing the swearing and drug use or the self harm. I'm not offended by the gruesome murders.. They dialogue is cringe worthy and not in a good way. It does not add to the story, it is unnecessarily crude and vulgar. I don't know anyone who speaks this way in real life. It seems forced. It was also predictable from episode one as soon as you see twins, where the plot is headed.
      • Jan 08, 2022
        This show was chaos.
      • Dec 20, 2021
        I don't understand how this show has such a low rating, I thought the acting was great, especially the main character who played two different people. I loved the storyline and the twists, I really hope this gets a season 2

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