"There is a time bomb ticking down toward a global extinction event. The bomb has a name, and everybody knows where it is. In fact, people pay to go and see it, and have picnics around it. It’s called the Yellowstone Caldera, and when it next blows it will probably take out mankind. There is another time bomb ticking, maybe on a much shorter fuse, and it is also leading up to an extinction event for humankind. This one will be an explosion of intelligence – artificial intelligence – that threatens to turn and look at its creator, and find him wanting.
When Alex Mason is sent by ODIN to investigate the death of anarchic genius Peter Justin at his cabin near the Yellowstone Caldera, what he finds is the ultimate nightmare. The two time bombs have linked and the countdown is on."