
I Know What You Did Last Summer remains an iconic entry in the realm of teen slasher films from the 1990s, captivating audiences with its suspenseful plot and memorable characters. The film, adapted from Lois Duncan’s 1973 novel, premiered on October 17, 1997, and quickly became a hallmark of its genre. The storyline follows four teenagers who become targets of a mysterious, hook-wielding killer in their seemingly quiet seaside town, leading to a series of chilling events that keep viewers on the edge of their seats.
This groundbreaking film featured a star-studded cast that became household names throughout the late 1990s and early 2000s. Notable actors such as Sarah Michelle Gellar, Freddie Prinze Jr., Jennifer Love Hewitt, and Ryan Phillippe all played crucial roles that propelled their careers to new heights. Explore the transformation of these talented actors from their debut in 1997 to their current status in the entertainment industry.
Discover the Evolution of Sarah Michelle Gellar

Sarah Michelle Gellar experienced a significant turning point in her career in 1997. Just a few months after the premiere of her acclaimed television series Buffy the Vampire Slayer, she took on the role of Helen Shivers in I Know What You Did Last Summer. Despite her character becoming one of the killer’s victims, Sarah’s career thrived post-release. She reunited with co-star Ryan in the cult classic Cruel Intentions in 1999 and further collaborated with Freddie in the beloved Scooby-Doo franchise. Sarah continued to shine in film and television, maintaining her role in Buffy until 2003, and later appearing in series like The Crazy Ones, Ringer, and Star Wars Rebels.
The chemistry between Sarah and Freddie blossomed into a romantic relationship when they first met on the set of I Know What You Did Last Summer. Their relationship flourished, leading to their marriage in 2012. Together, they share two wonderful children: Rocky and Charlotte, who continue to be a significant part of their lives.
Freddie Prinze Jr.: From Slasher Star to Family Man

Freddie Prinze Jr. emerged as one of the leading stars in Hollywood during the late 1990s. In I Know What You Did Last Summer, he portrayed Ray Bronson, a character who managed to survive the harrowing events of the film. His success continued with a return in the sequel, I Still Know What You Did Last Summer, released in 1998. Freddie also starred in popular teen romantic comedies such as She’s All That and Summer Catch. His on-screen chemistry with Sarah was evident in the live-action adaptation of Scooby-Doo, where they both starred. Throughout his career, Freddie has appeared in numerous television series, including Friends, Boston Legal, Freddie, 24, and many more. He also lent his voice to the character Kanan Jarrus in the animated series Star Wars Rebels and is set to star in the upcoming Punky Brewster revival on Peacock.
Jennifer Love Hewitt: A Journey from Horror to Heartfelt Roles

Jennifer Love Hewitt catapulted to stardom through her memorable performance as Julie James in I Know What You Did Last Summer. Her character’s journey gripped audiences and led to her return in the sequel, which further solidified her place in the horror genre. In 1998, she showcased her comedic talent in the beloved film Can’t Hardly Wait. Over the years, Jennifer has taken on significant roles in popular television series like Ghost Whisperer, The Client List, and Criminal Minds. Currently, she stars as Maddie Buckley on the hit series 9-1-1. In her personal life, Jennifer is married to Brian Hallisay, and together they have two beautiful children: Autumn and Atticus.
Ryan Phillippe: A Versatile Actor’s Rise to Fame

I Know What You Did Last Summer marked a significant milestone in Ryan Phillippe’s acting career, establishing him as a prominent figure in Hollywood. Following this breakout role, he starred alongside Sarah Michelle Gellar in the critically acclaimed film Cruel Intentions, which further enhanced his reputation as a talented actor. Ryan has since expanded his filmography with notable performances in acclaimed films such as Flags Of Our Fathers, Gosford Park, Crash, and Stop-Loss. From 2016 to 2018, he showcased his action prowess in the television series Shooter. Currently, he leads the upcoming ABC series Big Sky. After gaining fame together on Cruel Intentions, Ryan married his co-star Reese Witherspoon in 1999, and they welcomed two children: Ava and Deacon. The couple divorced in 2007, and Ryan later had a daughter with Alexis Knapp.