Book 7 in the Destroyermen series. The war escalates on each front. In the West, the Grik have developed new technologies to match the Alliance, unknown to them. In the East, the Dominion are pushed back, but treachery leads to catastrophic results. Meanwhile, a new enemy emerges as news of a Japanese destroyer crossing into the alternative world forces the crew of Walker to face a modern enemy. This book continues the alternative world adventure of the crew of Walker and their Allies, and doesn't lack for action and suspense. A fun series, I enjoy the heck out of it. Now I anxiously await the next book in the series, as this one ends on several cliffhangers for our heroes.