6.0/10680 votes#1 - It's Thursday
Season 1 Episode 1 - Aired 10/14/2021
Lennon Grant returns home after her first year at college and discovers that someone knows the terrible secret she and her OG crew of friends swore to keep last summer.
Director: Craig William Macneill
Writer: N/A
6.5/10555 votes#2 - It's Not Just for Dog Shit
Season 1 Episode 2 - Aired 10/14/2021
The estranged friends reunite to try and figure who might have revealed their secret or who else knows what they did – which leads to murder.
Director: Craig William Macneill
Writer: Sara Goodman
6.3/10492 votes#3 - A Gorilla Head Will Not Do
Season 1 Episode 3 - Aired 10/14/2021
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.
Director: Logan Kibens
Writer: Johanna Stokes
6.5/10493 votes#4 - Hot Shrimp Salad
Season 1 Episode 4 - Aired 10/14/2021
Lennon uncovers secrets about her twin and begins to fear the worst about the true identity of the person murdering her friends. The local community is shocked by more murders.
Director: Logan Kibens
Writer: Phoebe Fisher
6.1/10425 votes#5 - Mukbang
Season 1 Episode 5 - Aired 10/21/2021
The police question everyone in town with any connection to the victims. The crew think they know who is after them and hunt for evidence implicating the town eccentric.
Director: Benjamin Semanoff
Writer: Gary Tieche
6.4/10405 votes#6 - Least You Had a Spare
Season 1 Episode 6 - Aired 10/28/2021
More devastating truths are unearthed by Lennon as the crew frantically search for one of their own who has gone missing.
Director: Benjamin Semanoff
Writer: Lana Cho
6.3/10406 votes#7 - If Only Dogs Could Talk
Season 1 Episode 7 - Aired 11/4/2021
The town races to find the killer before another victim is claimed. Calm seems to be restored as the killing stops until the police make a gruesome discovery.
Director: Logan Kibens
Writer: Chaconne Martin-Berkowicz
4.7/10511 votes#8 - Your Next Life Could Be So Much Happier
Season 1 Episode 8 - Aired 11/11/2021
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.
Director: Logan Kibens
Writer: Sara Goodman
The Best Episodes of I Know What You Did Last Summer Season 1
Every episode of I Know What You Did Last Summer Season 1 ranked from best to worst. Discover the Best Episodes of I Know What You Did Last Summer Season 1!
In a sun-soaked Hawaiian town with a mysterious past, a group of friends is left with a dark secret after a tragic accident. One year...
Genres:DramaMystery
Network:Prime Video
Season 1 Ratings Summary
"It's Thursday" is the best rated episode of "I Know What You Did Last Summer" season 1. It scored 6/10 based on 680 votes. Directed by Craig William Macneill and written by N/A, it aired on 10/14/2021. This episode is rated 0.5 points higher than the second-best, "It's Not Just for Dog Shit".