Fifth-grader Alex Trumble builds a "dingus"--a time machine--when his brother Stephen is kidnapped by dangerous, evil time-travelers, to get back to the past and into the future to save his family fro
Alex Trumble is a pretty ordinary kid—except for the fact that his IQ borders on genius, and he loves to read books on vortexes and time travel. But when two angry hit men kidnap his big brother Steve
