Seasons & Episodes
Season 1
10 episodes
E01
I Am a Terrible Spy
Harriet's ambition to know and see everything may change reclusive Agatha K. Plumber's life for the better.
E02
Coat Vote
Harriet's new coat is perfect for her—and Marion Hawthorne, apparently. But who will win the school's vote?
E03
Cross My Heart and Hope Not to Dance
Janie and Harriet vow never to go to dancing school, but Harriet doesn't know that Janie actually likes dancing.
E04
Hermit the Spy
After an awful day, Harriet wants some alone time. Watching Mr. Withers' 26 cats is just what she needs…or is it?
E05
The Origin of M
Harriet learns about her middle initial and questions who she is. Her nanny, Ole Golly, teaches Harriet a valuable lesson about identity.
E06
Face the Music
Janie and Harriet get to meet their favorite singer, only to discover a shocking truth about his music.
E07
The Rarest Bird
Harriet really wants to win a photo competition, but it means teaming up with someone she doesn't see eye to eye with: her mom.
E08
The Stuffy Lovers
Sport and Harriet think it's time to get rid of their beloved stuffies, but change their minds—and the narrative—thanks to Marion's sneaky reporting.
E09
Spy V. Spy
Harriet adds the Garcia family to her spy route…and discovers that someone is spying on her.
E10
To My Future Self
On her birthday, Ole Golly revisits a list of everything she wanted to do by the age of 35—and Harriet is determined to help her complete it.
Season 2
10 episodesCast
Beanie Feldstein
as Harriet M. Welsch
Jane Lynch
as Ole Golly
Lacey Chabert
as Marion Hawthorne
Michelle Trachtenberg
as Dr. Wagner
