He was the world's greatest martial artist – a master of the world's deadliest art. Once revered, he became feared, and for that he blamed his homeland. America was no longer the land of the free and the home of the brave. It had become the land of murder and the home of corruption. But for a man like Trent Smith – it was the perfect hunting ground.

Biochemists have invented a drug that cures all disease and stops aging, but a New York industrialist has kept it secret for a specific purpose. He wants to form an exclusive fraternity of immortal supermen, all of whom are beholden to him. Only one thing puts a kink in his plan – the drug's side effects, which include wild surges of increased sexuality and unpredictable flares of homicidal rage.

Trent Smith has trained in Japan for over twenty years and he has his own agenda. He vows to avenge the innocents slain by the ever-growing number of American celebrities who murder with impunity. But when a dying scientist gives him the only copy of the secret formula, he must decide if the miraculous benefit is worth the toll it takes on the prodigious people who use it and their credulous victims who don't.

Killer of Killers is an action-packed martial arts thriller that pits one man's quest for justice against the wonders of medical science. But wonders for some are horrors for others in a secret society ruled by greed, malice, and a singular objective to attain eternal youth.