Another great story for Nick and Tesla. In this adventure they are trying to find out who is spying on them. The authors provided us with a handful of very humorous possibilities. I loved watching Nick and Tesla try to figure out each and every one of them. The techniques they used and the gadgets they build have instructions that are very easy to follow once again. It was a perfect mix of fun and education. My 11 year old daughter is loving this series as well.
*This book was received in exchange for an honest revew*