"A Companion to Wolves" is the story of a young nobleman, Isolfr, who is chosen to become a "wolfcarl -- "a warrior who is bonded to a fighting wolf. Isolfr is deeply drawn to the wolves, and though as his father's heir he can refuse the call, he chooses to go. The people of this wintry land depend on the wolfcarls to protect them from the threat of trolls and wyverns, though the supernatural creatures have not come in force for many years. Men are...