Colin King is Ninjak, MI-6's deadliest intelligence operative, and weapons expert. When the ruthless assassin Roku exploits his greatest weakness, Ninjak will be forced to betray his closest allies. Now, on the run, he must face off against the most powerful heroes known to man for a high-octane, take-no-prisoners trial by fire more perilous and more unpredictable than any he's faced before.