On an island marked by depravity and violence, Buck may be the most depraved and violent of all. He lives by his own rules – feeding his own insatiable, twisted desires.
His story began in Australia, where he joined the armed forces at an early age. But his commanders quickly discovered his 
perverse addiction to inflicting pain, and dismissed him. He fell into mercenary work, leading to a contract with Hoyt Volker, the South Pacific’s most notorious drug-runner and slave trader. Hoyt realized that Buck’s ferocious combat skills and unrelenting brutality could be of use. Since then, Buck has answered to no other. When Hoyt needs a kill, Buck gets the call.
Buck is a man of distinctive tastes. Violent torture is his favorite diversion, and he takes a perverse pride in his stomach-churning assaults. “Around here,” he says with a savage leer, “we eat what we kill.” His outsize Bowie knife is never far from his grasp – or from a terrified victim’s flesh.
Jason Brody first encounters Buck in a desperate search for his kidnapped friend, Keith. Jason learns that Buck has purchased Keith, and bargains for his safe return. Buck makes Jason a deal: if Jason can find and deliver a priceless ancient knife, Buck will let Keith go. Jason agrees, and embarks on a dangerous quest to recover the knife and present it to Buck. But Buck isn’t just holding Keith hostage, Keith has become so much more. Buck is only human after all.
Jason and Buck will have to compete for who is the better man, and only one will emerge victorious. And Buck doesn’t fight fair, he plays for keeps.
