Book 1

The Case of the Toxic River

by Cindy Cipriano

Published 25 August 2017

Grace Brooks is a total and unashamed nerd.

She loves her life, her friends, and her little dog Neutrino. That is until one day she’s uprooted to Miller’s Island, North Carolina, to start over as the new kid in school.

There she meets Jack, and they quickly bond over their love of science and all things nerdy. Together they embark on an epic adventure, travelling through time to solve the mystery of The Toxic River.


Book 2

Grace and Jack are still trying to come to grips with their time-travelling experience as they eagerly await their next adventure.

After making a promise that they’ll always travel together, Grace is unexpectedly transported into the future alone and scared. How did she get there? And more importantly, how can she get back without Jack there with her to help?

Picking up clues as she goes, Grace must try to navigate this new Miller’s Island and somehow figure out what sent her there in the first place.


Book 3

Their last time-travelling mishap still fresh in their minds, Grace and Jack are on edge about what might happen next. Grace’s memories of her solo trip to the future are never far away. When the future begins to seep out into the present, they must stick to the rules or risk the consequences.

They set themselves the task of finding out more about the mysterious ink, ending up in the past in a mysterious science lab. Could their new discovery also shed some light onto their mysterious friends at 21BUT22?


Book 4

The Case of the Mirrored Cat

by Cindy Cipriano

Published 28 December 2018

With the end of the school year fast approaching, Grace and Jack are looking forward to what their summer might bring. As a final goodbye to middle school, they decide to take one last trip from their science class, the place where their adventures all began.

What starts out like any other trip quickly goes drastically wrong when they are spotted upon their return to class.

To make matters worse, they discover the mysterious ink is having side effects not only on them, but also on their favourite travel spots. For Grace and Jack, questions are piling up faster than they can answer them as they continue to unravel the mystery of Miller’s Island.


Book 5

Middle School is finally over for Grace Brooks and she couldn’t be happier for her graduation. All that lies between Grace and high school is one final summer. And what a summer it is as Grace and Jack discover yet more deeply hidden secrets and embark on their most unusual trip to date.

When Jack takes one too many secret trips, he finds himself facing the very real possibility of running out of time altogether. Can Grace gather her wits and figure out how to save him from the Treacherous Tunnel before time is up?