In the vast, hot, sparse dry deserts of Nevada a miracle occurs...but not for the good. Back in Silicon Valley , in California, everything seems the same, cutthroat as usual, business is business, the weak fall, and the vicious prevail until another stronger one arrives...Jack Forman is unemployed, he lost his job six months ago, finding corruption can have hazardous consequences , companies are not happy with whistle blowers . A longtime inactive in this competitive place, is a disaster, a man with three children and an ambitious wife Julia, she has a job, is desperate . Jack becomes a househusband, not planned, but someone had to take care of the little kids, they are not angels, his wife much too busy at work. Technology is king in this prosperous valley, all is possible, dangerous experiments...are acceptable for going forward , making big money the goal. Which brings the narrative back to Nevada, a major problem is needed to be solved and Jack is the only person with the knowledge to do it. Oddly rehired by his old company, .Media Tronics, and sent to a secret site across the state border as a consultant for his wife's firm, Xymos , with a hush-hush Pentagon contract. A surprisingly development for the computer programmer... swirling, whirling tiny transparent tornadoes, like dust devils, he views outside the lonely plant, full of deadly bacteria and particles, they are alive, bold, brutal, and reproducing... Constantly changing shapes, beautiful colors, expanding and contracting, fading in high winds, but always reassembling in the burning heat in the daylights calm sun, still people start to die. Growing stronger daily, more intelligent and eerily forming solid images of humans, copies of the workers here. Especially Ricky, in charge of the Silver State's complex, and Jack's friend, however, it becomes apparent he is hiding something important . Jack feels uneasy and has a right to be so. The creatures want to come inside the building, why ? Julia is coming from the valley but he doesn't trust her anymore. Jack and a few friends must travel in the desert's night air and find the dust creatures unknown nest, destroy or be destroyed by them, that is the fact. Venturing down a slippery slope into the darkness of a cave, with menacing things below requires big courage, not many have...A great high- tech thriller, for the modern reader, as only Michael Crichton writes them, so well.