No. 1 by Michael Avallone. In Utangaville, Africa, it took two days. In Spayerwood, Scotland, it happened overnight. In each town, the people suddenly turned into mindless, babbling creatures who thrashed about wildly, uttering weird, half-human cries, then died. Doctors & scientists were baffled as to the cause. A sudden plague, some mysterious virus?

But to the members of the United Network Command for Law & Enforcement, there could be only one answer: THRUSH had a deadly new weapon for world conquest.

No 2 by Harry Whittington. His name was Tixe Ylno. The U.N.C.L.E files could tell nothing about him except for that code name. He could be anyone--a cab driver, a corporation executive, a scientist, a storekeeper...ANYONE! He might be anywhere in the United States. But whoever or whatever he was, U.N.C.L.E. had to find him because he controlled a secret that had the world at his mercy!

No. 3 by John Oram (Thomas).  The photos had already cost one life...

...and as the men from U.N.C.L.E. saw them projected on a screen in Alexander Waverly's office, they realized they were seeing a new weapon which could mean the deaths of billions more. For those secret photos showed an awesome new THRUSH weapon in action - huge, silent aircraft so incredibly swift and maneuverable that no nation's defense system could intercept them! 

No. 4 by David McDaniel  "Tell us all about Dagger!"

That was the command thrown at Napoleon Solo and Illya Kuryakin by the unseen THRUSH agents who kidnapped and interrogated them with lie detectors. And from each U.N.C.L.E. agent came the same answer: "We know absolutely nothing of DAGGER."
"You appear to be telling the truth," said the hidden voice. "A pity..."
But it was more than merely unfortunate that the U.N.C.L.E. organization had never heard of DAGGER. For the secret behind that name was an insane plot for mass murder - the murder of the human race.

No. 5 by John T. Phillifent.  "Was it a madman's hoax or...?", Napoleon Solo was wondering s he watched the members of a distinguished scientific convention cluster angrily around Sarah O'Rourke, beautiful niece of the eccentric Irish biochemist "King Mike" O'Rourke. The paper which Sarah had brought to the convention was gibberish, utter nonsense - or so it seemed at first.

Then suddenly Napoleon heard the deadly cough of a silenced pistol, and the scientist standing next to Sarah jerked and slumped to the floor, dead. As Sarah screamed an Napoleon sprinted to her side, the thought that leaped into his head was:
No one commits murder for a hoax!

No 6 by David McDaniel.  The body had been drained of blood...

In a remote area of the Transylvanian Alps, an U.N.C.L.E. agent had been killed in mysterious circumstances. The man's footprints in the snow led up to the base of the tree where he had been killed, but here were no pursuing tracks, no clues at all as to what doom had overtaken him.
There were only the two small holes in the neck, and a complete absence of blood.
Napoleon Solo and Ilya Kuryakin didn't believe in vampires - but as they investigated their fellow-agent's death they were forced again and again to wonder if perhaps the old terrors of the region had more reality than the world would like to think...

No. 7 by Peter Leslie  A cache of stolen Uranium leads Napoleon and Illya on a safari into danger, in this fast-paced suspense thriller.

The figure hidden in the folds of an Arab burnoose crouched in darkness, holding a miniaturized transceiver close to his face. When he heard three faint pips, he continued his message: "Attention Waverly. Have located THRUSH post office. Hope to identify package tomorrow before distribution of mail. Advise Kuryakin - repeat, Kuryakin. Message ends." Quickly he hid the tiny instrument in his bedding, and lay back as though asleep.
And in a tent nearby in the encampment, another man stood up from a suitcase full of electronic equipment and said softly, "somebody in this caravan is using a radio transmitter..."