Rogue Knight is the second book in the Five Kingdoms series and was released on November 18, 2014. It is preceded by Sky Raiders and succeeded by Crystal Keepers. Its events are set mainly in the kingdom of Elloweer and partially in Sambria.
"Cole Randolph's hunt for his lost friends has led him to the kingdom of Elloweer. Accompanied by new friends Mira, Twitch, and Jace, Cole teams up with the resistance movement and joins the search for Mira’s sister Honor.
"But Elloweer has grown unstable. A mysterious enemy is wiping out towns, leaving no witnesses or survivors. And an infamous rebel known throughout the kingdom as the “Rogue Knight” is upsetting the balance of power.
"With enemies in pursuit, Cole and Mira must resort to a fascinating new kind of magic to protect themselves. Every move is filled with danger as Cole and his friends try to outwit the High King, who will stop at nothing to regain what he has lost." 
See Book 2 Characters.