Ruby: A Jacob Blackstone Novel (Paperback) (ISBN-13: 9798340775542)

When rapidly rising tensions with Sayara leads to an unprecedented attack on Canadian soil, Jacob Blackstone is forced to return to Polaris from a six month hiatus. His mission; track down an unlikely saboteur and stop an invasion at all costs, but with the Sayaran army almost at the shoreline, he'll have to go up against time itself.

Book #2 of the Jacob Blackstone series.