A decapitated zookeeper. Two bodies found on hole six of a golf course. A stadium worker who never made it home. And an enemy with no way to stop its new-found killer instinct.Three zoo employees set out to find the escaped bird before anyone else does, but local police and a crazed militia man have their own plans. None are prepared for what's waiting for them.With the talons of a velociraptor, the cassowary is the most dangerous bird in the world. Six feet tall. 150 pounds. A seven-foot vertical leap. Capable of running 30 mph. And an expert swimmer.And this one just got an upgrade.