The Last Changeling

In The Hostage Prince, Prince Aspen and midwife's apprentice Snail tried to prevent the Seelie War by making a perilous journey to Aspen's father's kingdom. Their journey started the war instead. Chased by two armies, Aspen and Snail find refuge with the actors of Professor Odds' traveling troupe, dodging soldiers, Border Lord berserkers, a hungry troll, and assorted dwarfs, drows, lycants, boggles, and a cloaked spy. Will they make it out? Is any place safe for the two of them? And who, exactly, is the mysterious Professor Odds, who seems to have his own hidden powers and agenda?