With the school year ending, Grace and Jack hope for one thing: a break. One final, harmless trip from their science classroom-the place where everything began-feels like the perfect goodbye.
Until something goes wrong.
When they return, Grace and Jack realize they've been seen. And worse, the mysterious ink is no longer behaving the way it should. Strange side effects begin appearing-not just in them, but in the places they've visited before. Reflections don't line up. Clues repeat themselves. Even time seems to echo.
As questions pile up and answers grow scarce, Grace and Jack realize the mystery of Miller's Island is far bigger than they imagined. And if they don't understand what's changing soon, they may lose control of time altogether.
Book Four of the Miller's Island Mysteries - an upper middle grade mystery where science misfires and time starts to reflect back.
Tropes: Time side effects, being discovered, repeating clues, science gone wrong, escalating mystery Tone: Tense, puzzling, adventurous Heat Level: None / Age-appropriate Comps: Magic Tree House, The Time Museum, Greenglass House
