The Tesla Trap — S.J. King

The Timekeepers are a secret organization of kids who keep the course of history on track. And history needs them -- a villain called DeLay is causing chaos!

When the hands on their watches start to spin backward, the Timekeepers know that DeLay has been up to no good, and it's up to them to put things right...

In this installment, the Timekeepers travel back to 1890s New York City and the laboratory of Nikola Tesla. On the eve before Tesla is set to reveal his latest invention, the X-Ray Machine, the time pirate DeLay, disguised as Tesla's rival Thomas Edison, steals the machine. The Timekeepers begin a pursuit around New York City in search of the machine to ensure history stays on track.

With a range of adventures that span all of history, The Timekeepers series is perfect for any adventure lover.