The Infinity Ring is a new series similar to 39 Clues.  There are several books all written by different authors, plus games cards to allow online playing.  A Mutiny in Time is the first book in this new science fiction series.    The Infinity Ring is actually a time travel device which allows participants to travel back or forward to any time.  The story is based in the future and that the earth is being destroyed by volcanic eruptions, earthquakes, hurricanes, tornadoes, climate change, and a ruling group which refuses to recognize it.  Dak and his best friend Sera, plus Riq, travel back in time to undo the breaks in history, all of which have have compiled to create these disasters.  In this first book, they travel to Spain and set out as deckhands on the voyage with Christopher Columbus.  Apparently Columbus was a bad guy and his men mutinied and killed him.  The futurists must stop the mutiny and allow Columbus to discover the new world and set history correct.  Fast paced with lots of action.  Kids not familiar with history might become confused.  But as with 39 Clues, this series will also become a hit.