The Power of Four (Paperback)

The Power of Four is a paperback by Brandon T Snider. It was published on September 25, 2014.

Official Description
Four come together to make one unbeatable team.

As the four boys learn more about Quarton, they realize they can be much more powerful if they combine their Tenkai Knights! But back on Earth, someone has stolen a key, and they probably won’t use it for good. Can the boys work together to overcome the villain and get the key back?