From the New York Times bestselling author of the Sisters Grimm and NERDS comes the third and final book in the time-jumping, universe-skipping, action-packed middle grade series with equal parts humor and heart!After his adventures through time, Fin...
From the New York Times bestselling author of the Sisters Grimm and NERDS comes the second book in an action-packed middle grade series with equal parts humor and heart!When Finn is saved from the Time Rangers by an older version of himself, it comes...
From the New York Times bestselling author of the Sisters Grimm and NERDS comes a new action-packed middle-grade series with aliens, robots, and kids saving the world! “Alien bugs! Laser cannons! Bloodthirsty unicorns! Don’t be surpr...
