Capitalizing on the success of his instant horror classic 'Scream,' screenwriter Kevin Williamson's next film was 'I Know What You Did Last Summer.' Released in 1997 and based on the book of the same name by Lois Duncan, the film follows four friends who are stalked by a psychotic killer one year after they tried to cover up a hit and run accident. The film's cast was a 90s teen dream come true, featuring Jennifer Love Hewitt, Sarah Michelle Gellar, and more. 16 years later we revisit the cast of the film and see what they're up to now.

Jennifer Love Hewitt, Julie James

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Then: 'Party of Five' star Jennifer Love Hewitt followed in the footsteps of her co-star Neve Campbell, who starred in the 1996 horror film 'Scream,' also written by 'I Know What You Did Last Summer' scribe Kevin Williamson. Hewitt intially auditioned for the role of Helen, but instead played Julie, the film's main protagonist. Melissa Joan Hart also auditioned for the role of Julie.

Now: Hewitt returned to the horror genre as the lead star of the long-running series 'The Ghost Whisperer.' She currently stars on the Lifetime series 'The Client List,' and has a recurring role on TV Land's 'Hot in Cleveland.'

Sarah Michelle Gellar, Helen Shivers

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Then: Sarah Michelle Gellar was a former child actress who starred in the soap opera 'All My Children.' She auditioned for the role of Julie, but was given the part of Helen, the beauty pageant queen.

Now: Gellar stuck to the horror genre for a bit, with a role in 'Scream 2,' and as the lead on the long-running series 'Buffy the Vampire Slayer.' She has lent her voice to episodes of 'The Simpsons' and 'American Dad,' and currently stars on the new sitcom 'The Crazy Ones' with Robin Williams. She is married to her 'I Know What You Did Last Summer' co-star Freddie Prinze Jr.

Ryan Phillippe, Barry William Cox

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Then: Ryan Phillippe played Barry William Cox, Helen's boyfriend who drunkenly forms the plan to ditch the body and cover up the hit and run. Phillippe had previously starred in the films 'Crimson Tide' and 'White Squall.'

Now: Phillippe reunited with Sarah Michelle Gellar for the film 'Cruel Intentions,' and also appeared in '54,' 'Igby Goes Down,' and 'MacGruber.' He more recently appeared in the film 'Straight A's,' and has guest-starred on 'Damages' and 'The Eric Andre Show.' He married his 'Cruel Intentions' co-star Reese Witherspoon in 1999; the couple divorced in 2007.

Freddie Prinze Jr., Ray Bronson

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Then: Freddie Prinze Jr.'s career was just taking off when he landed a role in 'I Know What You Did Last Summer' as Ray, Julie's high school boyfriend.

Now: Prinze Jr. starred in a slew of rom-coms in the late 90s/early 00s, including 'She's All That,' 'Down to You,' and 'Head Over Heels.' He appeared in both 'Scooby-Doo' live action films with his wife and 'I Know What You Did Last Summer' co-star Sarah Michelle Gellar. Prinze Jr. was a special guest host, writer, producer, and director for the WWE, and more recently guest-starred on 'Bones' -- that show stars David Boreanaz, who previously worked with Gellar on 'Buffy the Vampire Slayer' and 'Angel.'

Bridgette Wilson, Elsa Shivers

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Then: Former model and 1990's Miss Teen USA Bridgette Wilson played Elsa, Helen's sister. Wilson previously had a recurring role on 'Saved by the Bell,' and starred in the films 'Last Action Hero,' 'Billy Madison,' and 'Mortal Kombat.'

Now: Following 'I Know What You Did Last Summer,' Wilson appeared in 'Love Stinks,' 'House on Haunted Hill,' and 'The Wedding Planner.' Her last credited role was in the 2009 film 'Phantom Punch.' She is married to professional tennis player Pete Sampras, with whom she shares two sons.

Anne Heche, Missy Egan

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Then: 1997 was a big year for Anne Heche, who appeared in 'I Know What You Did Last Summer' as Missy Egan, the sister of the man the teens hit and killed with their car. She also starred in 'Wag the Dog,' 'Donnie Brasco,' and 'Volcano.'

Now: Heche has appeared in the films 'Psycho' and 'Arthur Newman,' and can be seen next in the 2014 film 'Heat.' She had a recurring role on the TV series 'Hung,' and has guest-starred on 'Blackout.'

Muse Watson, Ben Willis

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Then: Muse Watson played Ben Willis, a grieving father of a teen girl who died in a hit and run. As it turns out, ol' Ben is out for revenge. Watson had previously appeared in the films 'Something to Talk About' and 'Rosewood.'

Now: Watson played Charles Westmoreland on 'Prison Break,' and has a recurring role on 'NCIS.' He recently guest-starred on 'Franklin and Bash' and had a supporting part in 'The Last Exorcism 2.'

Johnny Galecki, Max Neurick

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Then: Former 'Roseanne' star Johnny Galecki played Max, Ray's co-worker on the fishing boat, and the one possible witness to the hit and run.

Now: Galecki stars on 'The Big Bang Theory,' and has appeared in the films 'Vanilla Sky,' 'Hancock,' and 'In Time.' He can be seen next in the upcoming film 'CBGB.'