The Power Of The Cell

This is the fifth book in the Time Chronicles series. In The Power of the Cell, Nadim, Wilma and Kipper are chosen to go on a dangerous mission to recover the Cell, a crucial part of the TimeWeb that gives it its power. Nadim and Wilma are separated from Kipper. They end up in London in 1805, where a young Michael Faraday works as a bookbinder. But the Virans are close to thwarting their quest.
Kipper ends up meeting Faraday’s friend, Tyler, who has the Cell for safekeeping. Together, the three children with Michael and Tyler save the Cell from the clutches of the Virans, but Kipper gets left behind when Nadim and Wilma return!