Beanie FeldsteinHarriet M. Welsch (voice)
Jane LynchOle Golly (voice)
Lacey ChabertMarion Hawthorne (voice)
Kimberly BrooksJanie (voice)
Crispin FreemanMr. Welsch / Mr. Withers (voice)
Grey DeLisleMrs. Welsch (voice)
Series2021–2023TV-G
Harriet the Spy
Outspoken and perpetually curious. That's 11-year-old Harriet in a nutshell. But if she’s going to be Harriet M. Welsch, future writer, she'll need to know everything. And to know everything means she'll need to spy...on everyone.
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General Mouthwashington
When Harriet loses her last—and favorite—baby tooth, she struggles with saying goodbye to her babyhood.
It's My Party and I'll Spy If I Want To
The Welsch family attends a neighborhood party where Harriet is determined to find out why the Robinsons are so boring.
World of Tomorrow
At the world's fair, Harriet meets a 14-year-old photographer who's unsure of his future—but shows Harriet how to cherish today.
Lucky Penny
Sport joins Harriet for a local scavenger hunt. But when he brings his good-luck charm to improve their chances, Harriet is skeptical.
Ole Golly in Love
While Harriet's parents are out, she and Ole Golly join Mr. Waldenstein for a movie date. But can they get home before Harriet's parents do?
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