Nora Kelly, a young archaeologist in Santa Fe, receives a letter written 16 years ago, yet mysteriously mailed only recently. In it her father, long believed dead, hints at a fantastic discovery that will make him famous and rich - the lost city of an ancient civilization that suddenly vanished a thousand years ago. Now Nora is leading an expedition into a harsh, remote corner of Utah's canyon country, but what she unearths will be the newest of horrors.

The largest known meteorite has been discovered, entombed in the earth for millions of years on a frigid, desolate island off the southern tip of Chile. At four thousand tons, this treasure seems impossible to move. New York billionaire Palmer Lloyd is determined to have this incredible find for his new museum. Stocking a cargo ship with the finest scientists and engineers, he builds a flawless expedition. But from the first approach to the meteorite, people begin to die....

Just days before a massive exhibition opens at the popular New York Museum of Natural History, visitors are being savagely murdered in the museum's dark hallways and secret rooms. Autopsies indicate that the killer cannot be human.... But the museum's directors plan to go ahead with a big bash to celebrate the new exhibition, in spite of the murders.

Guy Carson is a brilliant scientist at GeneDyne, one of the world's foremost biochemical companies. When he is transferred to Mount Dragon, GeneDyne's high-security genetic engineering lab, his good fortune seems too good to be true. Carson soon finds that it is. He learns that GeneDyne geneticists are tinkering with a common virus with an eye on the enormous profit to be had from a cure for the flu. Their cure involves permanently altering DNA in humans. What's more, Mount Dragon harbors another secret that puts the world at horrifying risk.

Erebus Resort, occupying a magnificent, hundred-thousand acre valley deep in the Colorado Rockies, offers guests the experience of viewing woolly mammoths, Irish Elk, and giant ground sloths in their native habitat, brought back from extinction through the magic of genetic manipulation. When a billionaire's son and his new wife are kidnapped and murdered in the Erebus back country by what is assumed to be a gang of eco-terrorists, Colorado Bureau of Investigation Agent Frances Cash partners with county sheriff James Colcord to track down the perpetrators.