Author: Anne McCaffrey
Format: Mass Market Paperback
Publisher: Del Rey
Release Date: May 12, 1978
The Exploratory and Evaluation Corps of the Federated Sentient Planets had sent ARCT-10, with its mixed crew of shipbred and planet-bound technicians, to Ireta to catalogue fauna and flora and search for new energy sources. It was a simple mission. A standard crew.
Kai and his beautiful co-leader Varian, the best xenob-vet in the business, followed all the standard procedures -- but the results of their investigations were totally unexpected. Not only were the planet's creatures larger than anyone had anticipated and the geological finds smaller, but the rescue ship had inexplicably disappeared.
Then suddenly on a world of giant swamp creatures and deadly predators, a curious change had come over many of the members of the ARCT-10 crew... a change that would lead all of them, in one way or another, into the primitive darkness of a future world.