---
product_id: 592490374
title: "Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+"
brand: "thames & kosmos"
price: "4721 som"
currency: KGS
in_stock: true
reviews_count: 5
url: https://www.desertcart.kg/products/592490374-spy-labs-secret-message-tools-detective-toy-with-invisible-ink
store_origin: KG
region: Kyrgyzstan
---

# Boosts problem-solving & critical thinking 2 invisible ink pens for secret writing Complete kit with brush, petri dish & notepad Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+

**Brand:** thames & kosmos
**Price:** 4721 som
**Availability:** ✅ In Stock

## Summary

> 🕵️‍♂️ Unlock the power of invisible secrets—because real detectives never reveal their tricks!

## Quick Answers

- **What is this?** Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+ by thames & kosmos
- **How much does it cost?** 4721 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/592490374-spy-labs-secret-message-tools-detective-toy-with-invisible-ink)

## Best For

- thames & kosmos enthusiasts

## Why This Product

- Trusted thames & kosmos brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **STEM-Driven Fun:** Develop critical thinking and problem-solving abilities while having a blast cracking secret codes.
- • **Ready Out of the Box:** No assembly needed—just open the sturdy metal tin and dive into your undercover mission instantly.
- • **Invisible Ink Mastery:** Write secret messages that vanish and reappear only with your special pen—perfect for covert communication.
- • **Hands-On Detective Experience:** Engage in immersive spy play with a full toolkit designed to spark curiosity and investigative skills.
- • **Perfect Gift for Young Sleuths:** Ideal for kids 8+ who crave adventure and intellectual challenges, blending play with learning seamlessly.

## Overview

The Thames & Kosmos Spy Labs Secret Message Tools kit includes two invisible ink pens, a brush, petri dish, and notepad, all packed in a durable metal tin. Designed for kids aged 8 and up, this hands-on detective toy encourages problem-solving, critical thinking, and covert communication through fun, educational play without any batteries or assembly required.

## Features

- Send Secret Messages: To be a top detective, you need more than just a sharp mind—you also need the right tools. Our kit allows you to communicate secret messages that will be visible only to you and your trusted companion
- Fun Learning Resources: Share covert messages with your partner using ink that vanishes and reappears, readable only by both of you! With the secret pens, you can write messages that become invisible once they dry
- Comprehensive Model Kit: Each invisible ink pen can be used to write a secret message as well as reveal any covert message written by the other pen. The kit also includes tips and tricks for writing other secret communications
- For Age 8+: Suitable for kids aged 8 and above, this science kit is a great gift for any child with an inquisitive mind. The model kit comes packed in a sturdy metal tin
- Enhance Problem-Solving Skills: Our Spy Labs range of products allows kids to assume the role of a detective and take risks, experiment, problem solve, and even understand the value of perseverance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age Range Description | Kid |
| Asin | B0BS4GZS3S |
| Best Sellers Rank | 387,978 in Toys & Games (See Top 100 in Toys & Games) 77 in Detective Toys & Sets |
| Brand Name | Thames & Kosmos |
| Colour | Red |
| Customer Reviews | 4.0 4.0 out of 5 stars (75) 4.0 out of 5 stars |
| Educational Objective | Reading |
| Global Trade Identification Number | 10814743017723 |
| Included Components | 2 secret pens, brush, petri dish, and notepad, manual |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required | No |
| Item Dimensions | 10.9 x 3 x 7.4 centimetres |
| Item Type Name | Toy Detective Gear |
| Manufacturer | Thames & Kosmos |
| Manufacturer Part Number | 548013 |
| Material Type | Plastic |
| Maximum Age Recommendation | 1188.0 |
| Minimum Age Recommendation | 96.0 |
| Model Number | 548013 |
| Number Of Players | 1 |
| Operation Mode | Manual |
| Power Source | Hand-powered |
| Size | M |
| Supported Battery Types | No batteries required |
| Theme | Detective, Spying |
| Unit Count | 1.0 count |
| Upc | 814743017726 |

## Images

![Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+ - Image 1](https://m.media-amazon.com/images/I/81OcTSItcEL.jpg)

## Customer Reviews

### ⭐ Don’t waste your money
*by  on Reviewed in Australia 15 January 2026*

This is incredibly overpriced for what it is. It’s basically 2 pens and a tiny bit of paper. It claims it’s for ages 8 and up but requires heat to use. Incredibly disappointed and a waste of money.

### ⭐⭐⭐⭐⭐ Fun
*by  on Reviewed in the United States 16 March 2026*

Bought this as a gift .they seemed to enjoy it!

### ⭐⭐⭐⭐ simple but fun
*by  on Reviewed in the United States 20 September 2024*

This review is for the Thames & Kosmos Spy Labs Inc: Secret Message Tools Exchange Confidential Info w/Secret Pens.The metal storage tin is cute and useful. The kit consists of a small notepad, a petri dish, 2 pens, 1 brush, and a small info insert. The first secret message method is using the magic pens. The second method is to use household items like milk or juice from lemon, apple, or onion and then to reveal the dried message using heat from a 400 degree oven.This kit is small but fun. My kids have used invisible ink UV spy pens in the past and had fun. I think that they’ll like adding a few new methods for writing secret messages.

## Frequently Bought Together

- Thames & Kosmos Spy Labs Inc: Secret Message Tools Exchange Confidential Info w/Secret Pens | Essential Tools & Tricks of The Trade from The Detective Gear Experts for Young Investigators Medium
- Thames & Kosmos Spy Labs Inc: Fingerprinting Kit Identify, Collect, Analyze Fingerprint Evidence | Essential Tools and Tricks of The Trade from The Detective Gear Experts for Young Investigators
- Thames & Kosmos Spy Labs Inc: Secret Codes and Ciphers Learn How to Make & Exchange Coded Messages! | Essential Tools & Tricks of The Trade from The Detective Gear Experts for Young Investigators

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-09-03*