Action packed and just like the first three books-- full of twists I can never seem to guess. Pleasantly surprised. Most of this book was on the sea... a nice change from the other books. 
Great read with the promise of peril to come in book five. 

A trip across the sea turns to life and death as a ship captures them, taking all their supplies and demanding allegiance or death. If you know the King, he refuses to play by the rules and I was left surprised with every outcome he ended up with. 

Great read.