Dr Damon Zeno: microbiologist… American defector… a dedicated and dangerous enemy. That was about all Nick Carter knew about the man he was hunting — except that Zeno was set up in a secret lab, perfecting a chilling new weapon for the destruction of the United States.The weapon was the 'Omega mutation' — a microscopic bug. It multiplied quickly and it could not be destroyed. It would kill a man in a matter of days. Zeno planned to turn it loose in the United States — and Nick Carter had no choice but to destroy Zeno before 'Omega Day'.Soon Carter was in Tangier, hot on Zeno's trail — with his automatic snug in its holster… a beautiful girl named Gabrielle close at his side… and a death trap waiting for him at every turn.

A KILLER AT THE TOP OF HIS BLOODY PROFESSION...

A man unknown to any professional Intelligence Service in the world. The mastermind behind a billion-dollar private spy network called Topcon, Inc. A sadist whose brutal power reached halfway across the world...

IN PARIS

The Red defector scheduled to fill Nick Carter in about Topcon’s deadly game was knifed before he could utter a word.

IN LAUSANNE

The beautiful young German agent used every trick of her well-trained mind and body to destroy Nick’s chances of finding Topcon.

IN MILAN

The Chinese operative almost stopped Nick permanently, with a killing karate chop. The Chicom agent was also after the man who ran Topcon.

IN TRIESTE

The mistress of a Nazi war criminal forced Nick into an explosive game of hide-and-seek. And while she sidetracked Nick, Topcon’s elusive No. 1 man escaped once more.

IN BELGRADE

A macabre masquerade turned into a nightmare as Nick Carter finally discovered the true identity of Topcon’s master!

What do attempted assassination of world leaders by their closest advisers, a stolen nuclear missile and identical blonde triplets have in common?Nick Carter must stop a reign of terror that has gripped most of the civilized world. Sane men are being turned into kamikaze killers who hit like lightning and tell no tales!

The deathmaker was a small device, no larger than a heart patient's pacemaker. But it had the power to kill millions.Knox Warnow, ex-U.S. atomic scientist, knew this. He had the device implanted in his chest. He also knew that if his heart stopped beating, the bombs that he'd planted across America would automatically explode. New York, Chicago, Washington, San Francisco, and L.A. would be wiped off the face of this world.Nick Carter didn't know, and his assignment was to assassinate Knox Warnow. By the time Nick discovered Warnow's deadly secret, it was going to be much too late.

A Greek agent, an old friend of Carter, has been working behind the Iron Curtain but wants out and needs the help of AXE to accomplish it.

When a retiring Mafia hitman and an AXE agent are gunned down along with several bodyguards, Hawk wants answer and then he wants retribution.

“WE WILL BURY YOU!”

The Communist threat had never seemed so real! AXE had barely assigned Killmaster to his new mission when the message came from “the spoilers” — they were threatening to deal a death blow to American international influence.

It was clearly a job for Nick Carter — the most lethal of his career. For AXE’s top Killmaster was destined to play the lead in the diabolical plot.

What had they done to him? Had they really turned AXE’s most valuable agent against the very powers he was sworn to protect? It wasn’t until Nick came under the spell of the sensuous Russian operative that he began to understand how he was being used. But was it too late? Did his mind already belong to the KGB?

THERE ARE MANY WAYS TO KILL A MAN...Chinese assassins prefer a knife. Others use bare hands.American pros favor high-powered guns. Russian killers choose dynamite.There’s just one man who can defeat the many ways of death. His name’s Nick Carter.This time Killmaster will have to use all his predatory skills to deal with the butchers sent his way in...

“WE WANT TO HEAR THE MUSIC BEFORE HIS THROAT IS SLIT.”

Those were Nick Carter’s orders. Translated, they meant that Nick had to find Rico Corelli before the Syndicate killers did.

Corelli had been controlling the international drug chain from Corsica for years. But when the Mob found that their profits were slipping and Corelli’s were mounting, the heat was on and Corelli was on the run.

If Killmaster got to him first, Corelli could be made to talk and the drug chain would drop in AXE’s lap. If the Mafia did, there’d be one more bloody name on the Mob’s death list.

Armed only with a beautiful female narc and a flimsy cover, AXE’s chief agent begins the hunt. But the Mafia’s enforcers are with him all the way. And the first corpse is a ringer for the man Nick Carter is supposed to impersonate...

In a tense, bloody race against time, Killmaster stalks a man he’s never seen, a ruthless unphotographed killer running for his life from the men who know him best!

He was a highly paid professional, killing anyone, anywhere, for a price. A murderer who relished his work, lovingly watching each victim writhe in blood.

The Intelligence establishment named him The Vulture — “the scarlet vulture,” his mechanized talons dripping with human blood. Destroying The Vulture was Nick Carter’s next assignment.

But before Carter could get to his lethal quarry, he had to hunt down another man. A bizarre double of The Vulture, forced into becoming the assassin’s perfect weapon — and his next agonized victim!

A new army of killers was being recruited in Sicily by the Dons in the States. Young, tough, ruthless men were being smuggled into America, trained to wage brutal war within the underworld.

The government wanted to hasten the butchery and let the Brotherhood strangles its own blood. Someone had to infiltrate the Mob, go right to the top and assassinate the Number One Don.

It was an impossible assignment. So AXE gave it to Killmaster N3, Nick Carter!

Seeking to completely undermine the American influence in the Middle East, a Moroccan arms dealer unleashes his band of cutthroats to attack U.S. Seeking to completely undermine the American influence in the Middle East, a Moroccan arms dealer unleashes his band of cutthroats to attack U.S. allies.

GREGORIUS: An eccentric billionaire with ambitious plans for a chain of luxury hotels. But his life will cease if Stocelli doesn't get his gambling concessions. He hires Nick Carter to get Stocelli off his back.STOCELLI: A mafia boss whose operatives around the world are being framed, involving him on some serious charges. He hires Nick Carter to get him off the hook with the Commission.One of them was running the biggest heroin operation the world has seen. It was Killmaster's job to find out which.

Kidnapped...  a top nuclear scientist with knowledge vital to Western security.

Tortured...  a harmless merchant whose dying words were as enigmatic as his murder.

Massacred...  the screaming patrons of a Tangier nightclub, slaughtered along with the key AXE informer in their midst.

To Killmaster, each viscous crime marked another stage in a terrifying global strategy that stretched from the reeking contagion of a San Juan leper colony to the impregnable stronghold of a secret military organization, a group that had forged an extortion plot on an undreamed scale!

The KGB was planning to wreck the U.S. economy by forcing the biggest banks to dump all their stocks at the same time. A plant in one of Boston’s old families — and the manipulation of their vast financial power — would trigger total economic collapse!

Killmaster had to discover the identity of the phony “Boston Brahmin” and make his sudden death look like an accident — before the collapse began. But there was a welcoming committee of thousands of killers waiting for him...

AROUND THE WORLD...ON A TRAIL OF MURDERSaigonIt was the last days of the war, and in the middle of the bloodshed Killmaster has to find a man named Walter Corbin — and a roll of microfilm. He found his man just in time to see his head shatter into a million pieces...Hong KongThe trail led from sampan city, where silence was safety, to a series of brutal, vicious murders. Nick Carter was certain of one thing — the organization behind those killings had more at stake than a roll of film...WashingtonPrinted in USAKillmaster needed an update from Hawk. He called the States, but AXE had vanished! He was a “free agent”-free to die in a Hong Kong gutter while powerful men made plans for global revenge!

VENDETTA IN VIETNAM

General Martin is a hero. He proved his courage in Vietnam. And he paid for it in a POW camp. Now General Keith Martin is missing. Maybe he’s disappeared to have some privacy. And maybe he’s collecting on some old debts...

N-3’s assignment is to find him — at any cost. The trail gets hot when a beautiful Eurasian agent is assigned as Nick’s partner and when the murders of highly-placed North Vietnamese officials turn into an epidemic.

In a kabuki theater in Bangkok, Nick Carter is transformed into a Viet peasant. And in the middle of a sultry Southeast Asia night he parachutes into the countryside near Hanoi. If his disguise fails there’s no return ticket. And if he doesn’t find Keith Martin and stop the assassinations, the Vietnam War will look like a dress rehearsal for the real thing...

DEATH IN THE DESERT!The Syrian Liberation Army, a fanatical group driven by “The Hawk,” are expanding their activities — if they succeed a tanker will explode in New York Harbor wasting a million lives! And that’ll be just the beginning!Nick Carter enlists double agent Miriam Kamel to lead him to the terrorists’ desert camp under the spectacular ruins of The Tower of Lions. Miriam’s an expert in the arts of love and war — but Nick wonders if she’s as clever at deceit...Under the chilling desert moon, amid the dying cries of “The Hawk’s” torture victims, Nick is trapped in a nerve shattering battle. His Israeli friends call him Lamedvovnik — the secret saint. But as time runs short N-3 could quickly become another kind of “saint” — a very dead martyr!

ISLANDS OF DEATH!

Nicarxa and Apalca — idyllic island republics in the Caribbean. Until Don Carlos Italla, monk turned warlord and guerilla leader, chooses one of them for a hideout.

In a bizarre struggle for power and influence in the Americas, Nick Carter, AXE agent N3, has to ferret out the guerillas — and fend off the Cuban marine forces. All without the official recognition of the U.S. government!

Deep in the tropical mountains, Alto Arete stands, an impregnable fortress. Nick Carter’s job is to conquer it and Don Carlos’s crazed army of “monks” before peace in the Western Hemisphere becomes no more than a fond memory!

AXE chief David Hawk has a brilliant plan to lure one of the agency's most dangerous enemies out of Russia, and into Nick Carter's hands. Nikolai Kobelev has been the diabolical foe in some of agent N3's most perilous cases and N3 has to stop him before he hatches another fiendish plot.With a dead ringer for Kobelev's beautiful daughter as bait, it seems the KGB killer is as good as caught… until the tables are suddenly turned, and Nick finds himself locked in a deadly struggle to save two gorgeous American espionage agents-and himself — from certain death.