--- product_id: 592490374 title: "Thames & Kosmos 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: "$12.28" currency: USD in_stock: false reviews_count: 5 url: https://www.desertcart.us/products/592490374-thames-and-kosmos-spy-labs-secret-message-tools-detective-toy store_origin: US region: United States of America --- # Boosts problem-solving skills 2-in-1 invisible ink pens Durable metal tin case Thames & Kosmos 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:** $12.28 **Availability:** ❌ Out of Stock ## Summary > 🕵️‍♂️ Unlock the secrets of spycraft—because every millennial manager deserves a little mystery! ## Quick Answers - **What is this?** Thames & Kosmos 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?** $12.28 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/592490374-thames-and-kosmos-spy-labs-secret-message-tools-detective-toy) ## 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 - • **Ready Out of the Box:** No assembly or batteries needed—just grab your pens and start your secret mission instantly. - • **Invisible Ink Mastery:** Write secret messages that vanish and reappear only for your eyes—perfect for covert communication. - • **Sleek & Sturdy Design:** Comes in a compact, durable metal tin that’s as stylish as it is practical for on-the-go espionage. - • **Hands-On Detective Experience:** Engage in immersive spy play that sharpens critical thinking and perseverance. - • **Perfect Gift for Curious Minds:** Ideal for ages 8+, this kit inspires STEM learning through fun, interactive detective challenges. ## Overview The Thames & Kosmos Spy Labs Secret Message Tools kit includes two invisible ink pens that let users write and reveal secret messages, all housed in a durable metal tin. Designed for ages 8 and up, this no-assembly, battery-free set promotes problem-solving and critical thinking through hands-on spy-themed play, making it a perfect educational gift that blends fun with STEM learning. ## Description Shop Thames & Kosmos Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+. Free delivery and returns on eligible orders of £20 or more. Review: Okay, guys, let’s talk about the Thames & Kosmos Spy Labs Inc. Secret Message Tools. This kit is an absolute game-changer for all you young detectives out there. First off, it’s super engaging and educational. They even explain the science behind the secret ink, which is just so neat. The secret pens are high-quality and work perfectly when you follow the instructions. Now, let’s talk versatility. This kit isn’t just for kids; adults can totally get in on the fun too. It’s perfect for some family spy games or just to feel like a secret agent for a day. Plus, it promotes pretend play, so you can learn all the spy tricks right at home. And the best part? It’s super affordable. At just $15, it’s a steal for all the fun and learning packed into this kit. So, if you’re ready to dive into the world of espionage, this is the kit for you. Happy spying! Review: 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. ## 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 | |---------------|-------| | ASIN | B0BS4GZS3S | | Assembly Required | No | | Batteries Required? | No | | Best Sellers Rank | 362,257 in Toys & Games ( See Top 100 in Toys & Games ) 64 in Detective Toys & Sets | | Colour | Red | | Customer Reviews | 3.9 3.9 out of 5 stars (63) | | Date First Available | 27 Jun. 2023 | | Educational Objective(s) | Reading | | Item model number | 548013 | | Language | English | | Manufacturer recommended age | 8 years and up | | Material Type(s) | Plastic | | Number of Game Players | 1 | | Product Dimensions | 10.92 x 3.05 x 7.37 cm; 82 g | | Release date | 13 Mar. 2024 | | Remote Control Included? | No | | tech_spec_battery_description_toys | No batteries required | ## Images ![Thames & Kosmos 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/51LIYUJgLgL.jpg) ![Thames & Kosmos Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+ - Image 2](https://m.media-amazon.com/images/I/61HnLojEa+L.jpg) ![Thames & Kosmos Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+ - Image 3](https://m.media-amazon.com/images/I/71A-8H9bAAL.jpg) ![Thames & Kosmos Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+ - Image 4](https://m.media-amazon.com/images/I/71vTpqWAocL.jpg) ![Thames & Kosmos Spy Labs Secret Message Tools, Detective Toy with Invisible Ink Pen for Exchanging Confidential Messages, Toys to Develop Problem-Solving Skills, Age 8+ - Image 5](https://m.media-amazon.com/images/I/81OcTSItcEL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on 28 October 2024* Okay, guys, let’s talk about the Thames & Kosmos Spy Labs Inc. Secret Message Tools. This kit is an absolute game-changer for all you young detectives out there. First off, it’s super engaging and educational. They even explain the science behind the secret ink, which is just so neat. The secret pens are high-quality and work perfectly when you follow the instructions. Now, let’s talk versatility. This kit isn’t just for kids; adults can totally get in on the fun too. It’s perfect for some family spy games or just to feel like a secret agent for a day. Plus, it promotes pretend play, so you can learn all the spy tricks right at home. And the best part? It’s super affordable. At just $15, it’s a steal for all the fun and learning packed into this kit. So, if you’re ready to dive into the world of espionage, this is the kit for you. Happy spying! ### ⭐ Review *by N***A on 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. ### ⭐⭐⭐ Review *by A***T on 1 August 2024* This kept my 8 year old occupied for about 10 minutes. I'm sure he'll come back to it at some point, but the kit is small and not that great. It contains two pens, a small dish and a little brush: The dish and the brush are for an experiment to smear lemon juice or milk on a piece of paper, allow it to disappear and then develop it by heating the paper to 200 degrees for 5 minutes (with supervision!) One of the pens writes in invisible ink. The other pen enables it to be developed. That's it! There are other sets out there with little UV lights or bigger, better pens. The only thing this has going for it is that it's cheap and compact. Like all toys from this maker, the instructions are engaging and pretty good, hence 3 stars and not just 1. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/592490374-thames-and-kosmos-spy-labs-secret-message-tools-detective-toy](https://www.desertcart.us/products/592490374-thames-and-kosmos-spy-labs-secret-message-tools-detective-toy) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-26*