"Tyers has a degree in microbiology, and her affinity for it shows. . . . She handles the expansion of the faith content with a light but sure touch. The detailed world she crafts on Goddard is an oft-complicated but also absorbing one . . . offerings such as this . . . are sorely needed."

—Publishers Weekly

"Kathy does a splendid speculative job on several themes of particular interest to me, including the ethical dilemmas of human gene manipulation. I quickly became involved in her characters, and she did a fine job of maintaining suspense as to their assorted fates right up to the last chapter. . . . She handles a big cast here, including the perennial problem of realistic villains, with great panache . . . a splendid read, both realistic and engaging."

— Lois McMaster Bujold, multiple Nebula and Hugo Award-winning SF author

"Shivering World is an intricate web of deceit, hope, treachery, and love, packed with adventure and wonderful new ideas. I didn’t even try to put it down."

—Jerry Oltion, Nebula Award-winning SF author

"This novel presents sophisticated Christian science fiction, in the better senses of both genres. . . . Tyers’s degree in microbiology is readily evident, as is her extensive research into the complexities of terraforming . . . in this intricately complex exploration of human motivation. Ultimately a satisfying read."

—Voice of Youth Advocates

" . . Conflict enough to drive any two ordinary novels."

—Analog magazine

"Gripping and exciting. Tyers knows her craft. . . . Shivering World is a hard book to put down, and once you finish the story, it will be even harder to forget."

—In the Library Reviews

"Tyers is a genius at ratcheting up the stakes and layering the tension thick and high. The characters are gripping, the plot arresting, the storytelling impeccable. This book begs a sequel."

—Romantic Times Book Club (Top Pick)

"You’ll be “shivering” with excitement throughout this thrill of a new novel."

—Living Light News Online

ForeWord magazine: Honorable mention, Book of the Year Award