When Alex, Mattie, and Sophie touch the spyglass, they find themselves hurtled back to 1898, where real-life dinosaur cowboy Walter Granger has a job for them. Granger has discovered a secret cache of dinosaur skeletons. But someone’s trying to steal the bones for himself. Can the Time Spies catch the thief before the spyglass sends them home?


“Candice Ransom’s spare writing style should make history accessible to reluctant readers.”


–Vivian Vande Velde, author of A Hidden Magic