Picking up the story soon after events in The Invaders (2012), this engaging sequel opens aboard the Heron as Hal, his fellow Skandians (think Vikings), and their friend Lydia sail up a river in search of Zavac, the ruthless pirate who has stolen a precious relic from their village. Accused of murder and imprisoned along the way, they use their weapons, their wits, and their sailing skills in the headlong pursuit of their goal. Welcome humor lessens the dramatic tension at times, while the shipmates' individuality and comradeship make their adventures more meaningful. With a stronger story than its predecessor in the trilogy, the novel provides a satisfying conclusion to the three-book cycle, which opened with The Outcasts (2011). The jacket-flap copy suggests that there will be further volumes in the Brotherband Chronicles, a vigorous offshoot of the Ranger's Apprentice series.--Phelan, Carolyn Copyright 2010 Booklist