A second appearance for New York Homicide's McQuaid, just as brash and busy, not as funny, takes him to Navajo country following the murder of a private collection's security guard and the theft of some Indian objets d'artifacts and a rare copy of the Declaration of Independence. Then there are those snow rattlers which have a ""deadly invisible bite""--two of them might be human. . . .If you're not choosy and read them all.