Harriet the Spy cast: Where are they now?

Michelle Trachtenberg (Harriet M. Welsch)

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While she made an uncredited appearance in 1995's Melissa and popped up in episodes of All My Children, Law & Order, and The Adventures of Pete & Pete, Michelle Trachtenberg earned her first big-screen role as the title detective in 1996's Harriet the Spy.

After playing Harriet M. Welsch, the young star earned additional credits for Inspector Gadget (1999), EuroTrip (2004), Mysterious Skin (2004), Ice Princess (2005), Black Christmas (2006), 17 Again (2009), Cop Out (2010), and Take Me Home Tonight (2011). Trachtenberg also added to her TV résumé with turns on Buffy the Vampire Slayer, Six Feet Under, Mercy, Weeds, and Gossip Girl (as well as HBO Max's series reboot).

Gregory Smith (Sport)

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Gregory Smith filled his résumé with small gigs before coming to Harriet the Spy as Sport, appearing in Andre (1994), Leapin' Leprechauns! (1995), and Big Bully (1996).

The child star went on to hit the big screen in Krippendorf's Tribe (1998), Small Soldiers (1998), The Patriot (2000), and American Outlaws (2001) before playing Ephram Brown on Everwood for four seasons. The Zenon: Girl of the 21st Century (1999) alum earned additional credits for Boot Camp (2008), Hobo With a Shotgun (2011), and Dream House (2011), and played Dov Epstein on Rookie Blue from 2011 to 2015. Smith's latest onscreen appearance was for a 2017 episode of Designated Survivor. He has mostly switched gears to directing, working behind the scenes for CW shows like Arrow, The Flash, Riverdale, Legends of Tomorrow, and Superman & Lois.

Vanessa Lee Chester (Janie Gibbs)

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After appearing in a 1992 episode of Hangin' With Mr. Cooper, CB4 (1994), and A Little Princess (1995), Vanessa Lee Chester joined Harriet the Spy as Janie Gibbs, one of Harriet's best friends.

Chester spent the 2000s earning credits for The Lost World: Jurassic Park (1997), She's All That (1999), and 17 Again, as well as episodes of Crossing Jordan, Without a Trace, and Veronica Mars. The actress also popped up in episodes of Switched at Birth, How I Met Your Mother, Scorpion, Shameless, and Dollface, and made appearances in indie films like Pretty Problems (2022) and Give Me an A (2022).

J. Smith-Cameron (Mrs. Welsh)

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J. Smith-Cameron took on the role of Mrs. Welsch, Harriet's mom, after appearing in 84 Charing Cross Road (1987), Mighty Aphrodite (1995), and Sabrina (1995), and episodes of The Equalizer and The Days and Nights of Molly Dodd.

In the years since Harriet hit theaters, Smith-Cameron landed movie credits for The First Wives Club (1996), In & Out (1997), You Can Count on Me (2000), Margaret (2011), Man on a Ledge (2012), Nancy (2018) and Vengeance (2022). Appearing on shows like True Blood and Search Party, the actress is widely recognized for her supporting roles as Janet Talbot on Rectify and Gerri Kellman on Succession — the latter for which she earned an Emmy nomination for Outstanding Supporting Actress in a Drama Series.

Robert Joy (Mr. Welsch)

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Robert Joy appeared opposite J. Smith-Cameron as Harriet's father, Mr. Welsch. The actor came into the gig with decades of work to his name, including credits for Ragtime (1981), Amityville 3-D (1983), Desperately Seeking Susan (1985), Radio Days (1987), Millennium (1989), Longtime Companion (1989), The Dark Half (1993), and Waterworld (1995).

Since playing the father figure, Joy added to his résumé with appearances in Fallen (1998), Resurrection (1999), Sweet November (2001), The Shipping News (2001), Land of the Dead (2005), The Hills Have Eyes (2006), Aliens vs. Predator: Requiem (2007), The Goldfinch (2019), and Don't Look Up (2021). After playing Sid Hammerback on CSI: NY from 2005 to 2013, Joy went on to book other TV gigs on Masters of Sex, The Good Wife, Prodigal Son, and Julia, among others.

Charlotte Sullivan (Marion Hawthorne)

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Charlotte Sullivan played Marion Hawthorne in Harriet the Spy, the school's resident mean girl.

The gig was Sullivan's first credited role, and led to appearances in episodes of Goosebumps, Are You Afraid of the Dark?, and The Famous Jett Jackson. The actress went on to land movie roles in How to Deal (2003), Fever Pitch (2005), Citizen Gangster (2011), The Colony (2013), and Radius (2017). After spending five years playing Gail Peck on Rookie Blue, she did TV stints for shows like Chicago Fire, Wynonna Earp, Law & Order: Organized Crime, and So Help Me Todd.

Eartha Kitt (Agatha K. Plummer)

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The famed "Santa Baby" singer brought her star power to Harriet the Spy as Agatha K. Plummer, an object of Harriet's spying.

While Kitt was best known for her music and stage work, the performer also boasted a robust onscreen résumé, earning credits for St. Louis Blues (1958), I Spy (1965), Batman, Friday Foster (1975), Boomerang (1992), Fatal Instinct (1993), and The Emperor's New Groove (2000). Kitt, who spent two years voicing Yzma on The Emperor's New School in the late-2000s, died at the age of 81 in 2008.

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