The Timekeepers are a secret organisation 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 backwards, the Timekeepers know that DeLay has been up to no good, and it's up to them to put things right... In this instalment, 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 NYC 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.