Oliver & Daniel - The Temporal Phase Shift Adjuster (Oliver & Daniel - The Netherworld Series Book 2)

Oliver & Daniel return to Netherworld, where they were previously responsible for finding a lost artifact, needed to save the strange Parallel World from extinction.

Now they have another mission. They must return a small boy, who has entered this strange land by mistake, to his own world.

They are told that their own existence depends on the success of their mission, but they are not told why.

This time they have a device called "The Temporal Phase Shift Adjuster" to help them with their difficult task, as well as the "Portal Opener" which they acquired in their previous adventure.

The "Portal Opener" enables them to open the secret gates into and out of Netherword which lead to different places and different times.

The lost boy turns out to be from the past and the boys encounter interesting technology from another age in their adventure.

With the ability to visit different places and times in the past and the future, they must be careful not to change the past, and to avoid creating a Time Paradox when visiting the future.

They do, of course, manage to do both in this highly entertaining and light-hearted adventure, which has some unexpected twists in the story to keep the young readers entertained.

Like the first book, there is a small dictionary at the end, to help the young readers improve their vocabulary, without having to continually ask others for assistance.