Grace and Jack know one thing for certain: the strange ink that keeps pulling them through time isn't finished with them yet.
When details from the future begin leaking into the present-objects that shouldn't exist, symbols they don't recognize, warnings that arrive too soon-they realize the rules of time are starting to break. To stop it, they'll have to uncover the origins of the mysterious ink once and for all.
Their search takes them into the past again, this time inside a secretive science lab experimenting with powerful magnetic materials and early rocket research. But the deeper they dig, the clearer it becomes that their discoveries are connected to a shadowy group known only as 21BUT22-and that their time slips may not be accidents at all.
With timelines tangling and danger growing closer, Grace and Jack must rely on science, trust, and each other to keep the past from rewriting their future.
Book Three of the Miller's Island Mysteries - a fast-paced STEM mystery that dives deeper into the science behind time travel.
Tropes: Secret science labs, magnetic experiments, hidden organizations, rules of time, curiosity with consequences Tone: Fast-paced, clever, suspenseful Heat Level: None / Age-appropriate Comps: National Park Mysteries, The Einstein Prophecy, City of Ember
