Asa was a young woman who avenged a personal assault, was forced to become a warrior and leader during her family's travels, and ultimately became responsible for defending Birka, one of the great Viking trade centers. This actual Norse woman made her mark during a violent time. A Viking burial found on the Swedish island of Birka, identified as Bj.581, contained what was recently identified as the remains of a woman warrior and leader. What was found there confirmed that she was female and presented herself as such. Testing also suggested that she traveled extensively when she was young. What we cannot know for sure is how she grew into the role which typically was filled by men in the Norse culture. This story is a riveting but plausible reconstruction of her life during a turbulent time in European and human history. David Mullaly provides a realistic context based on our limited knowledge of the period, and creates a sequence of events which could have led to her becoming the extraordinary woman that she surely came to be. Fans of the fiction of Bernard Cornwell, Robert Low, and James L. Nelson will appreciate this historical novel. Mullaly's first two novels deal with a later period of Viking history.