The Reckling (Northern Lights, #1)

Last night, a coming-into-manhood celebration. He's now an adult, at 12 winters of age, a Viking warrior. But today, Falko's world is crumbling. His Afi—his grandfather—and his Amma are murdered—and his eldest brother is accused. The village elders will do what they think is right, but one elder hates the entire family. How can Falko find the real killer and convince the elders of Haakon's innocence–in only seven days?