---
product_id: 254988972
title: "HarperCollins The Secret Key"
price: "€ 20.76"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/254988972-harpercollins-the-secret-key
store_origin: PT
region: Portugal
---

# Top #12 in Children's City Life 4.6⭐ avg. rating Mystery genre favorite HarperCollins The Secret Key

**Price:** € 20.76
**Availability:** ✅ In Stock

## Summary

> 🔑 Unlock the mystery, join the adventure!

## Quick Answers

- **What is this?** HarperCollins The Secret Key
- **How much does it cost?** € 20.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/254988972-harpercollins-the-secret-key)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Highly Rated & Loved:** 4.6-star average from nearly 2,000 readers—proven to keep young minds hooked.
- • **Top-Ranked Bestseller:** Ranks #12 in Children's City Life and #124 in Mysteries & Detective Stories for Children.
- • **English Paperback Edition:** Easy-to-carry, beautifully bound paperback by HarperCollins, perfect for on-the-go reading.
- • **Captivating Young Detective:** Follow Agatha Oddly, a bold 13-year-old heroine leading a stylish new mystery series.
- • **Perfect Gift for Young Readers:** A birthday hit that sparks curiosity and a love for mysteries in tweens.

## Overview

The Secret Key by Lena Jones is a bestselling children's mystery paperback published by HarperCollins, featuring a daring 13-year-old detective. With a 4.6-star rating from over 1,900 reviews, it’s a top choice for young readers who crave thrilling city-life mysteries and engaging storytelling.

## Description

Buy HarperCollins The Secret Key by Jones, Lena online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #3,669 in Books ( See Top 100 in Books ) #7 in Children's Books on City Life #80 in Mysteries & Detective Stories for Children #212 in Children's Books on Friendship |
| Customer reviews | 4.6 4.6 out of 5 stars (1,930) |
| Dimensions  | 12.9 x 2.1 x 19.8 cm |
| Edition  | edition |
| ISBN-10  | 0008211833 |
| ISBN-13  | 978-0008211837 |
| Item weight  | 294 g |
| Language  | English |
| Print length  | 336 pages |
| Publication date  | 28 June 2018 |
| Publisher  | HARPERCOLLINSCHILDREN SBOOKS |
| Reading age  | 11 years and up |

## Images

![HarperCollins The Secret Key - Image 1](https://m.media-amazon.com/images/I/81Hl5oMzFlL.jpg)

## Available Options

This product comes in different **Format** options.

## Frequently Bought Together

- The Secret Key (Agatha Oddly)
- The Silver Serpent (Agatha Oddly, Book 3)
- Murder at the Museum (Agatha Oddly, Book 2)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-07*