"Virus Unleashed" is the prequel to Melton's series "The Zombie Awakening." It's a quick read with a cliffhanger ending that piqued my interest as the story progressed. The writing was a little choppy, but not too bad, and the beginning of the story was one hot mess. Once the action started, however, I could buy the scenario of an act-of-God meteor shower that destroys the research facility that releases the undead.
Stranger things have happened, right?