Earth of 2080 continues a cold war with the chilling aliens the Psy in Singh’s fourth fierce installment of the Psy-Changeling series (after Caressed by Ice). Half-human, half-leopard changeling Clay Bennett is shocked when lovely Talin McKade, wracked with illness and similarly half-changeling, returns to his life, having disappeared from his childhood 20 years before. Talin works at San Francisco’s Shine Foundation, dedicated to helping gifted but needy children, and a growing number of her missing charges have been turning up sans brains. There’s plenty of purring passion to keeps things hot as the Leopard shape-shifters Clay and Tally fall breathlessly in love, while the Psy continue to use children as guinea pigs for developing a hive mind. While this is paranormal romance at its best, newcomers are advised to check out the earlier adventures first. (Feb.)