Olivia Sharp, Agent for Secrets #4

The Green Toenails Gang

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"I, Nate the Great, have something to say. My cousin Olivia Sharp is almost (but not quite) the world's best detective. I solve mysteries. She's an agent for secrets. You won't forget Olivia. She won't let you."

Olivia sharp is back! Rather than solve mysteries like her cousin Nate, Olivia helps friends with their problems by detecting what's wrong beneath the surface. You'll be won over by Olivia's spunk, eccentricities, and can-do spirit.

80 pages, Paperback

First published January 1,1991

This edition

Format
80 pages, Paperback
Published
July 12, 2005 by Yearling
ISBN
9780440420637
ASIN
0440420636
Language
English

About the author

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Marjorie Weinman Sharmat was an American children's writer. She wrote more than 130 books for children and teens and her books have been translated into several languages. They have won awards including Book of the Year by the Library of Congress or have become selections by the Literary Guild.
Perhaps Sharmat's most popular work features the child detective Nate the Great. He was inspired by and named after her father, who lived to see the first Nate book published. One story, Nate the Great Goes Undercover, was adapted as a made-for-TV movie that won the Los Angeles International Children's Film Festival Award. Sharmat's husband Mitchell Sharmat expanded Nate's storyline by creating Olivia Sharp, his cousin and fellow detective. Husband and wife wrote four Olivia Sharp books published 1989 to 1991. During the 1990s, their son Craig Sharmat (then in his thirties) wrote three Nate books with his mother. In the late 2010s, their other son Andrew Sharmat co-wrote the last two Nate books written while Marjorie Weinman Sharmat was alive. With Marjorie Weinman Sharmat's passing in 2019 Andrew has continued writing the series with Nate the Great and the Earth Day Robot (2021).
In the mid-1980s Sharmat wrote three books published in 1984 and 1985 under the pseudonym Wendy Andrews.
Sharmat also wrote the Sorority Sisters series, eight short novels published in 1986 and 1987. They are romantic fiction with a sense of humor. They are set in a California public high school (day school for ages 14 to 18, approximately).

Community Reviews

Rating(4.1 / 5.0, 10 votes)
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10 reviews All reviews
April 17,2025
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I enjoyed this book because I like mysteries. I also enjoyed this book because I liked the part when Olivia Sharp joined the initial club.
April 17,2025
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Our girls (especially our youngest) love the Nate the Great books by Marjorie Weinman Sharmat. And we enjoyed the somewhat bizarre tales when he interacts with his cousin, Olivia, like Nate the Great Talks Turkey and Nate the Great, San Francisco Detective, and Nate the Great on the Owl Express. So we thought we'd check out this series, too.

Overall, I liked this story better than The Princess of the Fillmore Street School, but I wasn't terribly impressed with it. I did appreciate that there's a mystery to solve, which I got right away. And our girls liked it, and as we're almost to the end of the Nate the Great books, I was glad there was another series with a connection to Nate. I still get annoyed that Olivia is as rich as Eloise, but older and with more cash at her disposal. I'm sure we'll read more of these books, but I'm glad there are only four in the series.
April 17,2025
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I rather like Nate the Great's strange cousin Olivia. For one thing she's incredibly rich, for another, she's very good-hearted and willing to go out of her way to help a friend. In this adventure she runs to the aid of Taffy Plimpton, a friend who is being excluded from a club at her new school. I really enjoyed this, and look forward to more books about Olivia.
April 17,2025
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Olivia Sharp is one smart agent for secrets.Olivia's best friend,Taffy Plimpton,has a problem.Taffy wants to join a secret club,but the girls from the club won't let her in.Why not? I love this Olivia book and I would like to read more books about Olivia and Taffy.
By Magda.
April 17,2025
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Clever and creative, and funny. "Sometimes being rich helps. Sometimes it doesn't." I like that there's a distinction made between being a detective, an agent for secrets, and a spy. I like that nothing is ever as easy as it seems at first, but Olivia persists.

Best if read in order, but not necessary. I wish there were more.

(same review for each)
April 17,2025
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I liked this book because I like clubs. I also liked this book because I like riding bikes.
April 17,2025
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Trying to fit in and make friends in a new place can be hard. Olivia visits an old friend to help her out. As usual Olivia makes things a little worse before she makes them better.
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