Years after the end of the Vietnam War, four veterans, members of the same platoon, meet at the unveiling of the memorial in Washington. Men from different backgrounds, with very different lives, they were first joined in the brotherhood of combat, and now are drawn together by their awareness of a series of grisly murders being committed throughout Asia. The killer’s signature - a regimental playing card with the name KOKO scrawled across its - carries an awesome significance for the four men: they realize, with a horrible certainty, that another member of their platoon, a friend to them all, must be the man responsible. So they agree to head for Asia, not to catch the killer, but to save him, and soon they - and the reader - are off on one of the most suspenseful adventures ever…..
