Available Formats
Harriet Tells the Truth
By (Author) Elana K. Arnold
HarperCollins Publishers Inc
HarperCollins
1st December 2025
United States
Children
Fiction
Childrens / Teenage fiction: Humorous stories
Childrens / Teenage fiction: Family and home stories
Childrens / Teenage personal and social topics: Families and family members
FIC
Paperback
224
Harriet sets out to solve a poisoning on Marble Island in the third book in the acclaimed cozy mystery series from award-winning author Elana K. Arnold.
There are some things you should know about Harriet Wermer:
It's the truth. With her mom and new baby brother home from the hospital, it's almost time for Harriet to pack up and head home from Marble Island and all the friends she's made. But Harriet doesn't have time to think about thatnot when she discovers that Moneypenny, her Nanus adorable basset hound, has been poisoned!
Harriet suspects the culprit is one of the guests staying at Nanu's bed-and-breakfast, and she and her best friend, Clarence, are once again on the case. But when someone else falls ill, Harriets going to have to sleuth harder, spy sneakier, and bewilling to see that sometimes the truth is more complicated than it seems.
PRAISE FOR JUST HARRIET: "With its short chapters, lively occasional illustrations by Ho (Eyes That Kiss in the Corners), and energetic feuds between Harriet's cat and her grandmother's beloved basset hound, this series opener is a winner." -- Publishers Weekly (starred review)
PRAISE FOR JUST HARRIET: "A quiet read for those seeking a gentle slice-of-life story." -- Kirkus Reviews
PRAISE FOR JUST HARRIET: "A gentle, slow-moving summer adventure that's big on character growth." -- School Library Journal
Elana K. Arnold is the award-winning author of many books for children and teens, including the Sydney Taylor and National Jewish Book Award winner The Blood Years, the Printz Honor winner Damsel, the National Book Award finalist What Girls Are Made Of, and the Global Read Aloud selection A Boy Called Bat. She is a member of the faculty at Hamline University's MFA in writing for children and young adults program and lives in Long Beach, California, with her husband, two children, and a menagerie of animals. You can find her online at elanakarnold.com.