Unfortunately, there's a rather egregious gaffe on this edition. Somehow the copy on the back cover got screwed up, and the plot details given there are actually those from BUSTED FLUSH, not INSIDE STRAIGHT. We'll fix those on the second printing, I suppose, assuming there is a second printing. In which case the first printing may become as rare and valuable as that upside-down airmail stamp (but probably not).
Meanwhile, enjoy INSIDE STRAIGHT, but don't go looking for zombies, hurricanes, and nuclear explosions. Those are all in the second book.