They are the most ferocious and clever predators in the sea. Their brains are the second largest of any animal. Highly intelligent, social, and persistent, their coordinated hunting efforts rarely fail in securing prey. Their diet consists of anything unlucky enough to be in their crosshairs: fish, sharks, squid, seals, whales, sea birds. And now, humans. Tuesday Harbor is an isolated village on Orcas Island north of Seattle in the San Juan Islands where folks do their best to make a living serving the tourists and adventurers that come to use their home as an outdoor adventure playground. The town’s peace is shattered when a kayaker is killed, and the community’s cash cow, the bi-annual Pink Salmon fishing season, is threatened. When a rabid orca pod is suspected of attacking a civilian fishing boat and killing all those aboard, Conservation Officer, John Starker, is pitted against local businesses, the authorities, and native traditions as he hunts the rogue killer whales and searches for the cause of their odd behavior. But Starker and his team soon discover there’s much more at stake than their corner of the Pacific Ocean.