内容简介：
Nick Cross, also known as Misha, is a Tedareen, a Guardian, a member of a wise and ancient race of aliens who have lived among humans on Earth without detection for centuries. One of the Guardiansa goals is to help human beings advance and improve, but they also have their own life-or-death agenda, and time is rapidly running out. Embarked on his first mission to Earth, Nick finds complications beyond his training, including affection for humans in general, and attraction to a troubled young woman in particular. Most dangerous of all, he encounters sinister and mysterious forces arrayed against him and his vitally important mission that threaten the future survival of humans and Guardians alike. It will take all the wisdom in Nickas time-worn copy of The Book of the Guardian to guide him and his friends safely through to success.