Ace, New York, 1967, 1^st ed/paperback original.  G-636.  Based on the exciting MGM-Arena TV series.  MMPB, 158 pages.  Very good plus; tight binding; short (1/2”) tear at lower front edge.  Interior clean and unmarked with tanned pages.  Agents Napoleon Solo and Illya Kuryakin.  ‘Napoleon Solo and Illya Kuryakin were bored with the seemingly useless tip they were checking out:  they had to find a man named Dundee, but they didn’t know who he was or how he could be important.  But obviously he must be … for suddenly THRUSH declared war on all U.N.C.L.E. agents, trying to keep them away from the mysterious Dundee.  Even as they fought to stay alive, Solo and Illya’s minds were leaping ahead:  Was Dundee a minion of THRUSH?  Or was he working on his own, with THRUSH closing in on him?  Either way, what deadly secret was the man hiding?’ (from rear wrap)